31161053 has 16 divisors (see below), whose sum is σ = 38976000. Its totient is φ = 24202800.

The previous prime is 31161043. The next prime is 31161089. The reversal of 31161053 is 35016113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31161053 - 2²² = 26966749 is a prime.

It is a super-2 number, since 2×31161053² = 1942022448137618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31161043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38018 + ... + 38828.

It is an arithmetic number, because the mean of its divisors is an integer number (2436000).

Almost surely, 2^31161053 is an apocalyptic number.

It is an amenable number.

31161053 is a deficient number, since it is larger than the sum of its proper divisors (7814947).

31161053 is a wasteful number, since it uses less digits than its factorization.

31161053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 31161053 is about 5582.2086130850. The cubic root of 31161053 is about 314.6811352980.

Adding to 31161053 its reverse (35016113), we get a palindrome (66177166).

The spelling of 31161053 in words is "thirty-one million, one hundred sixty-one thousand, fifty-three".