31019089893 has 64 divisors (see below), whose sum is σ = 47036989440. Its totient is φ = 18013363200.

The previous prime is 31019089879. The next prime is 31019089903. The reversal of 31019089893 is 39898091013.

It is a happy number.

It is not a de Polignac number, because 31019089893 - 2⁴ = 31019089877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31019089693) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71637405 + ... + 71637837.

It is an arithmetic number, because the mean of its divisors is an integer number (734952960).

Almost surely, 2^31019089893 is an apocalyptic number.

31019089893 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31019089893 is a deficient number, since it is larger than the sum of its proper divisors (16017899547).

31019089893 is a wasteful number, since it uses less digits than its factorization.

31019089893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010.

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 31019089893 in words is "thirty-one billion, nineteen million, eighty-nine thousand, eight hundred ninety-three".