31097853 has 6 divisors (see below), whose sum is σ = 44919134. Its totient is φ = 20731896.

The previous prime is 31097839. The next prime is 31097873. The reversal of 31097853 is 35879013.

It can be written as a sum of positive squares in only one way, i.e., 19686969 + 11410884 = 4437^2 + 3378^2 .

It is not a de Polignac number, because 31097853 - 2⁴ = 31097837 is a prime.

It is a super-2 number, since 2×31097853² = 1934152922419218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31097873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1727650 + ... + 1727667.

Almost surely, 2^31097853 is an apocalyptic number.

It is an amenable number.

31097853 is a deficient number, since it is larger than the sum of its proper divisors (13821281).

31097853 is a wasteful number, since it uses less digits than its factorization.

31097853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455323 (or 3455320 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 31097853 is about 5576.5448980529. The cubic root of 31097853 is about 314.4682487368.

The spelling of 31097853 in words is "thirty-one million, ninety-seven thousand, eight hundred fifty-three".