31012231401 has 16 divisors (see below), whose sum is σ = 47941614720. Its totient is φ = 19775915280.

The previous prime is 31012231399. The next prime is 31012231403. The reversal of 31012231401 is 10413221013.

31012231401 is a `hidden beast` number, since 31 + 0 + 1 + 2 + 231 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (31012231399) and next prime (31012231403).

It is not a de Polignac number, because 31012231401 - 2¹ = 31012231399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012231403) 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, 24968970 + ... + 24970211.

It is an arithmetic number, because the mean of its divisors is an integer number (2996350920).

Almost surely, 2^31012231401 is an apocalyptic number.

It is an amenable number.

31012231401 is a deficient number, since it is larger than the sum of its proper divisors (16929383319).

31012231401 is a wasteful number, since it uses less digits than its factorization.

31012231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49939213 (or 49939207 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31012231401 its reverse (10413221013), we get a palindrome (41425452414).

The spelling of 31012231401 in words is "thirty-one billion, twelve million, two hundred thirty-one thousand, four hundred one".