31185053 has 2 divisors, whose sum is σ = 31185054. Its totient is φ = 31185052.

The previous prime is 31185047. The next prime is 31185059. The reversal of 31185053 is 35058113.

It is a balanced prime because it is at equal distance from previous prime (31185047) and next prime (31185059).

It can be written as a sum of positive squares in only one way, i.e., 23639044 + 7546009 = 4862^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 31185053 - 2¹⁸ = 30922909 is a prime.

It is a super-2 number, since 2×31185053² = 1945015061225618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31185059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15592526 + 15592527.

It is an arithmetic number, because the mean of its divisors is an integer number (15592527).

Almost surely, 2^31185053 is an apocalyptic number.

It is an amenable number.

31185053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31185053 is an equidigital number, since it uses as much as digits as its factorization.

31185053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 31185053 is about 5584.3578860958. The cubic root of 31185053 is about 314.7619028848.

The spelling of 31185053 in words is "thirty-one million, one hundred eighty-five thousand, fifty-three".