91403857338031 has 8 divisors (see below), whose sum is σ = 104537967897600. Its totient is φ = 78288850942008.

The previous prime is 91403857338019. The next prime is 91403857338049. The reversal of 91403857338031 is 13083375830419.

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

It is not a de Polignac number, because 91403857338031 - 2¹⁹ = 91403856813743 is a prime.

It is a super-2 number, since 2×91403857338031² (a number of 29 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 (91403857338071) 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, 4776030631 + ... + 4776049768.

It is an arithmetic number, because the mean of its divisors is an integer number (13067245987200).

Almost surely, 2^{91403857338031} is an apocalyptic number.

91403857338031 is a deficient number, since it is larger than the sum of its proper divisors (13134110559569).

91403857338031 is a wasteful number, since it uses less digits than its factorization.

91403857338031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9552081773.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 91403857338031 in words is "ninety-one trillion, four hundred three billion, eight hundred fifty-seven million, three hundred thirty-eight thousand, thirty-one".