31234971 has 4 divisors (see below), whose sum is σ = 41646632. Its totient is φ = 20823312.

The previous prime is 31234969. The next prime is 31234979. The reversal of 31234971 is 17943213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17943213 = 3 ⋅5981071.

It is not a de Polignac number, because 31234971 - 2¹ = 31234969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205826 + ... + 5205831.

It is an arithmetic number, because the mean of its divisors is an integer number (10411658).

Almost surely, 2^31234971 is an apocalyptic number.

31234971 is a deficient number, since it is larger than the sum of its proper divisors (10411661).

31234971 is a wasteful number, since it uses less digits than its factorization.

31234971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411660.

The product of its digits is 4536, while the sum is 30.

The square root of 31234971 is about 5588.8255474652. The cubic root of 31234971 is about 314.9297601010.

The spelling of 31234971 in words is "thirty-one million, two hundred thirty-four thousand, nine hundred seventy-one".