31454157493 has 8 divisors (see below), whose sum is σ = 35150544576. Its totient is φ = 27897256800.

The previous prime is 31454157421. The next prime is 31454157551. The reversal of 31454157493 is 39475145413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31454157493 - 2¹⁷ = 31454026421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454157593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34871121 + ... + 34872022.

It is an arithmetic number, because the mean of its divisors is an integer number (4393818072).

Almost surely, 2^31454157493 is an apocalyptic number.

It is an amenable number.

31454157493 is a deficient number, since it is larger than the sum of its proper divisors (3696387083).

31454157493 is a wasteful number, since it uses less digits than its factorization.

31454157493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69743195.

The product of its digits is 907200, while the sum is 46.

The spelling of 31454157493 in words is "thirty-one billion, four hundred fifty-four million, one hundred fifty-seven thousand, four hundred ninety-three".