31113321201 has 12 divisors (see below), whose sum is σ = 46156098612. Its totient is φ = 20181613536.

The previous prime is 31113321181. The next prime is 31113321227. The reversal of 31113321201 is 10212331113.

31113321201 is a `hidden beast` number, since 31 + 113 + 321 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11457561600 + 19655759601 = 107040^2 + 140199^2 .

It is not a de Polignac number, because 31113321201 - 2¹⁸ = 31113059057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31113321251) 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, 46716366 + ... + 46717031.

It is an arithmetic number, because the mean of its divisors is an integer number (3846341551).

Almost surely, 2^31113321201 is an apocalyptic number.

It is an amenable number.

31113321201 is a deficient number, since it is larger than the sum of its proper divisors (15042777411).

31113321201 is a wasteful number, since it uses less digits than its factorization.

31113321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93433440 (or 93433437 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31113321201 its reverse (10212331113), we get a palindrome (41325652314).

The spelling of 31113321201 in words is "thirty-one billion, one hundred thirteen million, three hundred twenty-one thousand, two hundred one".