31032949 has 2 divisors, whose sum is σ = 31032950. Its totient is φ = 31032948.

The previous prime is 31032923. The next prime is 31032959. The reversal of 31032949 is 94923013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 14976900 = 4007^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 31032949 - 2⁵ = 31032917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31032949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31032959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516474 + 15516475.

It is an arithmetic number, because the mean of its divisors is an integer number (15516475).

Almost surely, 2^31032949 is an apocalyptic number.

It is an amenable number.

31032949 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032949 is an equidigital number, since it uses as much as digits as its factorization.

31032949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 31032949 is about 5570.7224845616. The cubic root of 31032949 is about 314.2493219078.

The spelling of 31032949 in words is "thirty-one million, thirty-two thousand, nine hundred forty-nine".