131101220031 has 8 divisors (see below), whose sum is σ = 175432680624. Its totient is φ = 87085286400.

The previous prime is 131101220027. The next prime is 131101220101. The reversal of 131101220031 is 130022101131.

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 131101220031 - 2² = 131101220027 is a prime.

It is a super-2 number, since 2×131101220031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101220011) 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, 78880770 + ... + 78882431.

It is an arithmetic number, because the mean of its divisors is an integer number (21929085078).

Almost surely, 2^131101220031 is an apocalyptic number.

131101220031 is a deficient number, since it is larger than the sum of its proper divisors (44331460593).

131101220031 is a wasteful number, since it uses less digits than its factorization.

131101220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157763481.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131101220031 its reverse (130022101131), we get a palindrome (261123321162).

The spelling of 131101220031 in words is "one hundred thirty-one billion, one hundred one million, two hundred twenty thousand, thirty-one".