31172134 has 24 divisors (see below), whose sum is σ = 54726840. Its totient is φ = 13277376.

The previous prime is 31172131. The next prime is 31172137. The reversal of 31172134 is 43127113.

It is an interprime number because it is at equal distance from previous prime (31172131) and next prime (31172137).

It is a super-2 number, since 2×31172134² = 1943403876227912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31172131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16654 + ... + 18430.

It is an arithmetic number, because the mean of its divisors is an integer number (2280285).

Almost surely, 2^31172134 is an apocalyptic number.

31172134 is a deficient number, since it is larger than the sum of its proper divisors (23554706).

31172134 is a wasteful number, since it uses less digits than its factorization.

31172134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1965 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 31172134 is about 5583.2010531594. The cubic root of 31172134 is about 314.7184315175.

Adding to 31172134 its reverse (43127113), we get a palindrome (74299247).

The spelling of 31172134 in words is "thirty-one million, one hundred seventy-two thousand, one hundred thirty-four".