131634062621 has 4 divisors (see below), whose sum is σ = 138562171200. Its totient is φ = 124705954044.

The previous prime is 131634062591. The next prime is 131634062641. The reversal of 131634062621 is 126260436131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126260436131 = 103 ⋅1225829477.

It is a cyclic number.

It is not a de Polignac number, because 131634062621 - 2⁶ = 131634062557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131634062641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3464054261 + ... + 3464054298.

It is an arithmetic number, because the mean of its divisors is an integer number (34640542800).

Almost surely, 2^131634062621 is an apocalyptic number.

It is an amenable number.

131634062621 is a deficient number, since it is larger than the sum of its proper divisors (6928108579).

131634062621 is an equidigital number, since it uses as much as digits as its factorization.

131634062621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928108578.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 131634062621 its reverse (126260436131), we get a palindrome (257894498752).

The spelling of 131634062621 in words is "one hundred thirty-one billion, six hundred thirty-four million, sixty-two thousand, six hundred twenty-one".