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31125053253 = 375092911877
BaseRepresentation
bin11100111111001100…
…101001111101000101
32222100011021112022010
4130333030221331011
51002221003201003
622144301524433
72151210405330
oct347714517505
988304245263
1031125053253
1112222310208
126047873719
132c204a8298
141713a29617
15c227ad003
hex73f329f45

31125053253 has 16 divisors (see below), whose sum is σ = 47521848960. Its totient is φ = 17750796096.

The previous prime is 31125053251. The next prime is 31125053257. The reversal of 31125053253 is 35235052113.

It is not a de Polignac number, because 31125053253 - 21 = 31125053251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31125053253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31125053251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1445250 + ... + 1466627.

It is an arithmetic number, because the mean of its divisors is an integer number (2970115560).

Almost surely, 231125053253 is an apocalyptic number.

It is an amenable number.

31125053253 is a deficient number, since it is larger than the sum of its proper divisors (16396795707).

31125053253 is a wasteful number, since it uses less digits than its factorization.

31125053253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912396.

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 31125053253 in words is "thirty-one billion, one hundred twenty-five million, fifty-three thousand, two hundred fifty-three".

Divisors: 1 3 7 21 509 1527 3563 10689 2911877 8735631 20383139 61149417 1482145393 4446436179 10375017751 31125053253