31453292249 has 2 divisors, whose sum is σ = 31453292250. Its totient is φ = 31453292248.

The previous prime is 31453292231. The next prime is 31453292263. The reversal of 31453292249 is 94229235413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16407816649 + 15045475600 = 128093^2 + 122660^2 .

It is an emirp because it is prime and its reverse (94229235413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31453292249 - 2⁸ = 31453291993 is a prime.

It is not a weakly prime, because it can be changed into another prime (31453292219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726646124 + 15726646125.

It is an arithmetic number, because the mean of its divisors is an integer number (15726646125).

Almost surely, 2^31453292249 is an apocalyptic number.

It is an amenable number.

31453292249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31453292249 is an equidigital number, since it uses as much as digits as its factorization.

31453292249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The spelling of 31453292249 in words is "thirty-one billion, four hundred fifty-three million, two hundred ninety-two thousand, two hundred forty-nine".