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31445340201 = 3211317629699
BaseRepresentation
bin11101010010010010…
…011101000000101001
310000011110221210101200
4131102102131000221
51003400001341301
622240142434413
72162146660452
oct352222350051
9100143853350
1031445340201
1112377090570
126116b92a09
132c71959ca2
1417443a0129
15c40977c86
hex75249d029

31445340201 has 12 divisors (see below), whose sum is σ = 49550233200. Its totient is φ = 19057781880.

The previous prime is 31445340193. The next prime is 31445340209. The reversal of 31445340201 is 10204354413.

It is a happy number.

31445340201 is a `hidden beast` number, since 3 + 1 + 4 + 453 + 4 + 0 + 201 = 666.

It is an interprime number because it is at equal distance from previous prime (31445340193) and next prime (31445340209).

It is not a de Polignac number, because 31445340201 - 23 = 31445340193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31445340209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158814751 + ... + 158814948.

It is an arithmetic number, because the mean of its divisors is an integer number (4129186100).

Almost surely, 231445340201 is an apocalyptic number.

It is an amenable number.

31445340201 is a deficient number, since it is larger than the sum of its proper divisors (18104892999).

31445340201 is a wasteful number, since it uses less digits than its factorization.

31445340201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317629716 (or 317629713 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 31445340201 its reverse (10204354413), we get a palindrome (41649694614).

The spelling of 31445340201 in words is "thirty-one billion, four hundred forty-five million, three hundred forty thousand, two hundred one".

Divisors: 1 3 9 11 33 99 317629699 952889097 2858667291 3493926689 10481780067 31445340201