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31010211323 = 713421780809
BaseRepresentation
bin11100111000010110…
…100100010111111011
32222001011011221210022
4130320112210113323
51002002103230243
622125040241055
72145314306240
oct347026442773
988034157708
1031010211323
1112173501823
12601531018b
132c02769090
1417026935c7
15c17675b68
hex7385a45fb

31010211323 has 16 divisors (see below), whose sum is σ = 38175936960. Its totient is φ = 24529430016.

The previous prime is 31010211301. The next prime is 31010211329. The reversal of 31010211323 is 32311201013.

It is not a de Polignac number, because 31010211323 - 216 = 31010145787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31010211329) 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, 343343 + ... + 424151.

It is an arithmetic number, because the mean of its divisors is an integer number (2385996060).

Almost surely, 231010211323 is an apocalyptic number.

31010211323 is a deficient number, since it is larger than the sum of its proper divisors (7165725637).

31010211323 is a wasteful number, since it uses less digits than its factorization.

31010211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85046.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31010211323 its reverse (32311201013), we get a palindrome (63321412336).

The spelling of 31010211323 in words is "thirty-one billion, ten million, two hundred eleven thousand, three hundred twenty-three".

Divisors: 1 7 13 91 4217 29519 54821 80809 383747 565663 1050517 7353619 340771553 2385400871 4430030189 31010211323