31000012401 has 16 divisors (see below), whose sum is σ = 43169976000. Its totient is φ = 19767296448.

The previous prime is 31000012391. The next prime is 31000012453. The reversal of 31000012401 is 10421000013.

It is a happy number.

It is not a de Polignac number, because 31000012401 - 2¹³ = 31000004209 is a prime.

It is a super-2 number, since 2×31000012401² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000012471) 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, 2360226 + ... + 2373323.

It is an arithmetic number, because the mean of its divisors is an integer number (2698123500).

Almost surely, 2^31000012401 is an apocalyptic number.

It is an amenable number.

31000012401 is a deficient number, since it is larger than the sum of its proper divisors (12169963599).

31000012401 is a wasteful number, since it uses less digits than its factorization.

31000012401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733648.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31000012401 its reverse (10421000013), we get a palindrome (41421012414).

The spelling of 31000012401 in words is "thirty-one billion, twelve thousand, four hundred one".