31055369 has 2 divisors, whose sum is σ = 31055370. Its totient is φ = 31055368.

The previous prime is 31055351. The next prime is 31055407. The reversal of 31055369 is 96355013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 6175225 = 4988^2 + 2485^2 .

It is a cyclic number.

It is not a de Polignac number, because 31055369 - 2²⁴ = 14278153 is a prime.

It is a super-2 number, since 2×31055369² = 1928871887452322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31055069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15527684 + 15527685.

It is an arithmetic number, because the mean of its divisors is an integer number (15527685).

Almost surely, 2^31055369 is an apocalyptic number.

It is an amenable number.

31055369 is a deficient number, since it is larger than the sum of its proper divisors (1).

31055369 is an equidigital number, since it uses as much as digits as its factorization.

31055369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 31055369 is about 5572.7344275499. The cubic root of 31055369 is about 314.3249809951.

The spelling of 31055369 in words is "thirty-one million, fifty-five thousand, three hundred sixty-nine".