31523032049 has 2 divisors, whose sum is σ = 31523032050. Its totient is φ = 31523032048.

The previous prime is 31523032003. The next prime is 31523032127. The reversal of 31523032049 is 94023032513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29099242225 + 2423789824 = 170585^2 + 49232^2 .

It is a cyclic number.

It is not a de Polignac number, because 31523032049 - 2¹² = 31523027953 is a prime.

It is a super-2 number, since 2×31523032049² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31523052049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15761516024 + 15761516025.

It is an arithmetic number, because the mean of its divisors is an integer number (15761516025).

Almost surely, 2^31523032049 is an apocalyptic number.

It is an amenable number.

31523032049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31523032049 is an equidigital number, since it uses as much as digits as its factorization.

31523032049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 31523032049 in words is "thirty-one billion, five hundred twenty-three million, thirty-two thousand, forty-nine".