31442303293 has 2 divisors, whose sum is σ = 31442303294. Its totient is φ = 31442303292.

The previous prime is 31442303287. The next prime is 31442303383. The reversal of 31442303293 is 39230324413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30289225444 + 1153077849 = 174038^2 + 33957^2 .

It is a cyclic number.

It is not a de Polignac number, because 31442303293 - 2⁹ = 31442302781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31442303213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721151646 + 15721151647.

It is an arithmetic number, because the mean of its divisors is an integer number (15721151647).

Almost surely, 2^31442303293 is an apocalyptic number.

It is an amenable number.

31442303293 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442303293 is an equidigital number, since it uses as much as digits as its factorization.

31442303293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 31442303293 in words is "thirty-one billion, four hundred forty-two million, three hundred three thousand, two hundred ninety-three".