31415152493 has 2 divisors, whose sum is σ = 31415152494. Its totient is φ = 31415152492.

The previous prime is 31415152441. The next prime is 31415152507. The reversal of 31415152493 is 39425151413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26162092009 + 5253060484 = 161747^2 + 72478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31415152493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31415152423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15707576246 + 15707576247.

It is an arithmetic number, because the mean of its divisors is an integer number (15707576247).

Almost surely, 2^31415152493 is an apocalyptic number.

It is an amenable number.

31415152493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31415152493 is an equidigital number, since it uses as much as digits as its factorization.

31415152493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The spelling of 31415152493 in words is "thirty-one billion, four hundred fifteen million, one hundred fifty-two thousand, four hundred ninety-three".