31312011201 has 32 divisors (see below), whose sum is σ = 44404039680. Its totient is φ = 19598894784.

The previous prime is 31312011179. The next prime is 31312011209. The reversal of 31312011201 is 10211021313.

It is a happy number.

It is not a de Polignac number, because 31312011201 - 2⁹ = 31312010689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31312011209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356640 + ... + 435678.

It is an arithmetic number, because the mean of its divisors is an integer number (1387626240).

Almost surely, 2^31312011201 is an apocalyptic number.

It is an amenable number.

31312011201 is a deficient number, since it is larger than the sum of its proper divisors (13092028479).

31312011201 is a wasteful number, since it uses less digits than its factorization.

31312011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79205.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31312011201 its reverse (10211021313), we get a palindrome (41523032514).

The spelling of 31312011201 in words is "thirty-one billion, three hundred twelve million, eleven thousand, two hundred one".