31443512644249 has 2 divisors, whose sum is σ = 31443512644250. Its totient is φ = 31443512644248.

The previous prime is 31443512644081. The next prime is 31443512644253. The reversal of 31443512644249 is 94244621534413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27856439526400 + 3587073117849 = 5277920^2 + 1893957^2 .

It is a cyclic number.

It is not a de Polignac number, because 31443512644249 - 2²⁵ = 31443479089817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31443512644196 and 31443512644205.

It is not a weakly prime, because it can be changed into another prime (31443512654249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721756322124 + 15721756322125.

It is an arithmetic number, because the mean of its divisors is an integer number (15721756322125).

Almost surely, 2^{31443512644249} is an apocalyptic number.

It is an amenable number.

31443512644249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31443512644249 is an equidigital number, since it uses as much as digits as its factorization.

31443512644249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9953280, while the sum is 52.

The spelling of 31443512644249 in words is "thirty-one trillion, four hundred forty-three billion, five hundred twelve million, six hundred forty-four thousand, two hundred forty-nine".