31340922 has 16 divisors (see below), whose sum is σ = 62741952. Its totient is φ = 10436960.

The previous prime is 31340873. The next prime is 31340923. The reversal of 31340922 is 22904313.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 31340892 and 31340901.

It is not an unprimeable number, because it can be changed into a prime (31340923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7123 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (3921372).

Almost surely, 2^31340922 is an apocalyptic number.

31340922 is an abundant number, since it is smaller than the sum of its proper divisors (31401030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31340922 is a wasteful number, since it uses less digits than its factorization.

31340922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 31340922 is about 5598.2963479973. The cubic root of 31340922 is about 315.2854454656.

The spelling of 31340922 in words is "thirty-one million, three hundred forty thousand, nine hundred twenty-two".