31235453273 has 2 divisors, whose sum is σ = 31235453274. Its totient is φ = 31235453272.

The previous prime is 31235453257. The next prime is 31235453279. The reversal of 31235453273 is 37235453213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27432634384 + 3802818889 = 165628^2 + 61667^2 .

It is a cyclic number.

It is not a de Polignac number, because 31235453273 - 2⁴ = 31235453257 is a prime.

It is not a weakly prime, because it can be changed into another prime (31235453279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15617726636 + 15617726637.

It is an arithmetic number, because the mean of its divisors is an integer number (15617726637).

Almost surely, 2^31235453273 is an apocalyptic number.

It is an amenable number.

31235453273 is a deficient number, since it is larger than the sum of its proper divisors (1).

31235453273 is an equidigital number, since it uses as much as digits as its factorization.

31235453273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 38.

The spelling of 31235453273 in words is "thirty-one billion, two hundred thirty-five million, four hundred fifty-three thousand, two hundred seventy-three".