31214906 has 4 divisors (see below), whose sum is σ = 46822362. Its totient is φ = 15607452.

The previous prime is 31214903. The next prime is 31214921. The reversal of 31214906 is 60941213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 3389281 = 5275^2 + 1841^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (31214903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7803725 + ... + 7803728.

Almost surely, 2^31214906 is an apocalyptic number.

31214906 is a deficient number, since it is larger than the sum of its proper divisors (15607456).

31214906 is a wasteful number, since it uses less digits than its factorization.

31214906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15607455.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 31214906 is about 5587.0301592170. The cubic root of 31214906 is about 314.8623098572.

The spelling of 31214906 in words is "thirty-one million, two hundred fourteen thousand, nine hundred six".