31167142 has 4 divisors (see below), whose sum is σ = 46750716. Its totient is φ = 15583570.

The previous prime is 31167119. The next prime is 31167187. The reversal of 31167142 is 24176113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7791784 + ... + 7791787.

It is an arithmetic number, because the mean of its divisors is an integer number (11687679).

Almost surely, 2^31167142 is an apocalyptic number.

31167142 is a deficient number, since it is larger than the sum of its proper divisors (15583574).

31167142 is a wasteful number, since it uses less digits than its factorization.

31167142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15583573.

The product of its digits is 1008, while the sum is 25.

The square root of 31167142 is about 5582.7539798920. The cubic root of 31167142 is about 314.7016306328.

The spelling of 31167142 in words is "thirty-one million, one hundred sixty-seven thousand, one hundred forty-two".