131101221031 has 8 divisors (see below), whose sum is σ = 143147566224. Its totient is φ = 119076217920.

The previous prime is 131101221019. The next prime is 131101221059. The reversal of 131101221031 is 130122101131.

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 131101221031 - 2²¹ = 131099123879 is a prime.

It is a super-2 number, since 2×131101221031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131101220996 and 131101221014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101221091) 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, 5322670 + ... + 5347243.

It is an arithmetic number, because the mean of its divisors is an integer number (17893445778).

Almost surely, 2^131101221031 is an apocalyptic number.

131101221031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131101221031 is a deficient number, since it is larger than the sum of its proper divisors (12046345193).

131101221031 is a wasteful number, since it uses less digits than its factorization.

131101221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671041.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131101221031 its reverse (130122101131), we get a palindrome (261223322162).

The spelling of 131101221031 in words is "one hundred thirty-one billion, one hundred one million, two hundred twenty-one thousand, thirty-one".