131102021091 has 8 divisors (see below), whose sum is σ = 175015095040. Its totient is φ = 87295147272.

The previous prime is 131102021053. The next prime is 131102021129. The reversal of 131102021091 is 190120201131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131102021053) and next prime (131102021129).

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

It is not a de Polignac number, because 131102021091 - 2¹⁸ = 131101758947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131102021191) 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, 26547151 + ... + 26552088.

It is an arithmetic number, because the mean of its divisors is an integer number (21876886880).

Almost surely, 2^131102021091 is an apocalyptic number.

131102021091 is a deficient number, since it is larger than the sum of its proper divisors (43913073949).

131102021091 is an equidigital number, since it uses as much as digits as its factorization.

131102021091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53100065.

The product of its (nonzero) digits is 108, while the sum is 21.

The spelling of 131102021091 in words is "one hundred thirty-one billion, one hundred two million, twenty-one thousand, ninety-one".