31053973 has 4 divisors (see below), whose sum is σ = 31065120. Its totient is φ = 31042828.

The previous prime is 31053959. The next prime is 31053977. The reversal of 31053973 is 37935013.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31053973 - 2¹⁷ = 30922901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31053977) 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, 2688 + ... + 8326.

It is an arithmetic number, because the mean of its divisors is an integer number (7766280).

Almost surely, 2^31053973 is an apocalyptic number.

It is an amenable number.

31053973 is a deficient number, since it is larger than the sum of its proper divisors (11147).

31053973 is an equidigital number, since it uses as much as digits as its factorization.

31053973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 31053973 is about 5572.6091734483. The cubic root of 31053973 is about 314.3202710822.

Adding to 31053973 its reverse (37935013), we get a palindrome (68988986).

The spelling of 31053973 in words is "thirty-one million, fifty-three thousand, nine hundred seventy-three".