91374983031 has 8 divisors (see below), whose sum is σ = 122445539200. Its totient is φ = 60610541112.

The previous prime is 91374983003. The next prime is 91374983057. The reversal of 91374983031 is 13038947319.

It is a happy number.

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

It is not a de Polignac number, because 91374983031 - 2⁷ = 91374982903 is a prime.

It is a super-2 number, since 2×91374983031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91374987031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76527865 + ... + 76529058.

It is an arithmetic number, because the mean of its divisors is an integer number (15305692400).

Almost surely, 2^91374983031 is an apocalyptic number.

91374983031 is a deficient number, since it is larger than the sum of its proper divisors (31070556169).

91374983031 is a wasteful number, since it uses less digits than its factorization.

91374983031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153057125.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 91374983031 in words is "ninety-one billion, three hundred seventy-four million, nine hundred eighty-three thousand, thirty-one".