31342869 has 12 divisors (see below), whose sum is σ = 46950176. Its totient is φ = 20895084.

The previous prime is 31342853. The next prime is 31342877. The reversal of 31342869 is 96824313.

It is not a de Polignac number, because 31342869 - 2⁴ = 31342853 is a prime.

It is a super-2 number, since 2×31342869² = 1964750874302322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342889) 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, 64249 + ... + 64734.

Almost surely, 2^31342869 is an apocalyptic number.

It is an amenable number.

31342869 is a deficient number, since it is larger than the sum of its proper divisors (15607307).

31342869 is an equidigital number, since it uses as much as digits as its factorization.

31342869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128998 (or 128986 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 31342869 is about 5598.4702374845. The cubic root of 31342869 is about 315.2919741828.

The spelling of 31342869 in words is "thirty-one million, three hundred forty-two thousand, eight hundred sixty-nine".