31464971 has 16 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 29449728.

The previous prime is 31464967. The next prime is 31464973. The reversal of 31464971 is 17946413.

It is a cyclic number.

It is not a de Polignac number, because 31464971 - 2² = 31464967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31464973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188330 + ... + 188496.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^31464971 is an apocalyptic number.

31464971 is a deficient number, since it is larger than the sum of its proper divisors (2101429).

31464971 is a wasteful number, since it uses less digits than its factorization.

31464971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358.

The product of its digits is 18144, while the sum is 35.

The square root of 31464971 is about 5609.3645807703. The cubic root of 31464971 is about 315.7008699222.

The spelling of 31464971 in words is "thirty-one million, four hundred sixty-four thousand, nine hundred seventy-one".