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31013443201 = 138872689571
BaseRepresentation
bin11100111000100010…
…111001011010000001
32222001101021011002111
4130320202321122001
51002003420140301
622125233415321
72145353626516
oct347042713201
988041234074
1031013443201
11121753099a4
12601640a541
132c0332b130
141702c9530d
15c17ab3551
hex7388b9681

31013443201 has 8 divisors (see below), whose sum is σ = 33436759104. Its totient is φ = 28595508240.

The previous prime is 31013443169. The next prime is 31013443229. The reversal of 31013443201 is 10234431013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31013443201 - 25 = 31013443169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013443231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333255 + ... + 1356316.

It is an arithmetic number, because the mean of its divisors is an integer number (4179594888).

Almost surely, 231013443201 is an apocalyptic number.

It is an amenable number.

31013443201 is a deficient number, since it is larger than the sum of its proper divisors (2423315903).

31013443201 is a wasteful number, since it uses less digits than its factorization.

31013443201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690471.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31013443201 its reverse (10234431013), we get a palindrome (41247874214).

The spelling of 31013443201 in words is "thirty-one billion, thirteen million, four hundred forty-three thousand, two hundred one".

Divisors: 1 13 887 11531 2689571 34964423 2385649477 31013443201