31462645493 has 2 divisors, whose sum is σ = 31462645494. Its totient is φ = 31462645492.

The previous prime is 31462645469. The next prime is 31462645499. The reversal of 31462645493 is 39454626413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18355372324 + 13107273169 = 135482^2 + 114487^2 .

It is an emirp because it is prime and its reverse (39454626413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31462645493 - 2⁸ = 31462645237 is a prime.

It is a super-2 number, since 2×31462645493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31462645499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15731322746 + 15731322747.

It is an arithmetic number, because the mean of its divisors is an integer number (15731322747).

Almost surely, 2^31462645493 is an apocalyptic number.

It is an amenable number.

31462645493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31462645493 is an equidigital number, since it uses as much as digits as its factorization.

31462645493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 47.

The spelling of 31462645493 in words is "thirty-one billion, four hundred sixty-two million, six hundred forty-five thousand, four hundred ninety-three".