31012427 has 12 divisors (see below), whose sum is σ = 32954976. Its totient is φ = 29179440.

The previous prime is 31012411. The next prime is 31012439. The reversal of 31012427 is 72421013.

It is not a de Polignac number, because 31012427 - 2⁴ = 31012411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31012399 and 31012408.

It is not an unprimeable number, because it can be changed into a prime (31012127) 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, 97673 + ... + 97989.

It is an arithmetic number, because the mean of its divisors is an integer number (2746248).

Almost surely, 2^31012427 is an apocalyptic number.

31012427 is a deficient number, since it is larger than the sum of its proper divisors (1942549).

31012427 is a wasteful number, since it uses less digits than its factorization.

31012427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31012427 is about 5568.8802285558. The cubic root of 31012427 is about 314.1800359081.

The spelling of 31012427 in words is "thirty-one million, twelve thousand, four hundred twenty-seven".