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31053153402 = 23215744924473
BaseRepresentation
bin11100111010111010…
…011000010001111010
32222011010222122020200
4130322322120101322
51002044101402102
622133212503030
72146345306635
oct347272302172
988133878220
1031053153402
1112195771847
12602777aa76
132c0b622aab
141708270c1c
15c1b30951c
hex73ae9847a

31053153402 has 48 divisors (see below), whose sum is σ = 67863954600. Its totient is φ = 10261794816.

The previous prime is 31053153401. The next prime is 31053153421. The reversal of 31053153402 is 20435135013.

31053153402 is a `hidden beast` number, since 3 + 1 + 0 + 5 + 315 + 340 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28524169881 + 2528983521 = 168891^2 + 50289^2 .

It is not an unprimeable number, because it can be changed into a prime (31053153401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1256638 + ... + 1281110.

Almost surely, 231053153402 is an apocalyptic number.

31053153402 is an abundant number, since it is smaller than the sum of its proper divisors (36810801198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31053153402 is a wasteful number, since it uses less digits than its factorization.

31053153402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25087 (or 25084 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 31053153402 its reverse (20435135013), we get a palindrome (51488288415).

The spelling of 31053153402 in words is "thirty-one billion, fifty-three million, one hundred fifty-three thousand, four hundred two".

Divisors: 1 2 3 6 9 18 157 314 449 471 898 942 1347 1413 2694 2826 4041 8082 24473 48946 70493 73419 140986 146838 211479 220257 422958 440514 634437 1268874 3842261 7684522 10988377 11526783 21976754 23053566 32965131 34580349 65930262 69160698 98895393 197790786 1725175189 3450350378 5175525567 10351051134 15526576701 31053153402