31054997 has 4 divisors (see below), whose sum is σ = 31097760. Its totient is φ = 31012236.

The previous prime is 31054993. The next prime is 31055009. The reversal of 31054997 is 79945013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79945013 = 1283 ⋅62311.

It is a cyclic number.

It is not a de Polignac number, because 31054997 - 2² = 31054993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31054997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20273 + ... + 21750.

It is an arithmetic number, because the mean of its divisors is an integer number (7774440).

Almost surely, 2^31054997 is an apocalyptic number.

It is an amenable number.

31054997 is a deficient number, since it is larger than the sum of its proper divisors (42763).

31054997 is an equidigital number, since it uses as much as digits as its factorization.

31054997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42762.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 31054997 is about 5572.7010506576. The cubic root of 31054997 is about 314.3237259318.

The spelling of 31054997 in words is "thirty-one million, fifty-four thousand, nine hundred ninety-seven".