131220424031 has 8 divisors (see below), whose sum is σ = 131908186080. Its totient is φ = 130532881248.

The previous prime is 131220424001. The next prime is 131220424079. The reversal of 131220424031 is 130424022131.

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

It is a cyclic number.

It is not a de Polignac number, because 131220424031 - 2¹⁸ = 131220161887 is a prime.

It is a super-2 number, since 2×131220424031² (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 = 131220423988 and 131220424006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131220424001) 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, 1222910 + ... + 1325876.

It is an arithmetic number, because the mean of its divisors is an integer number (16488523260).

Almost surely, 2^131220424031 is an apocalyptic number.

131220424031 is a deficient number, since it is larger than the sum of its proper divisors (687762049).

131220424031 is a wasteful number, since it uses less digits than its factorization.

131220424031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109633.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 131220424031 its reverse (130424022131), we get a palindrome (261644446162).

The spelling of 131220424031 in words is "one hundred thirty-one billion, two hundred twenty million, four hundred twenty-four thousand, thirty-one".