131622630 has 32 divisors (see below), whose sum is σ = 316242144. Its totient is φ = 35060736.

The previous prime is 131622599. The next prime is 131622637. The reversal of 131622630 is 36226131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131622630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131622637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34582 + ... + 38198.

It is an arithmetic number, because the mean of its divisors is an integer number (9882567).

Almost surely, 2^131622630 is an apocalyptic number.

131622630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131622630 is an abundant number, since it is smaller than the sum of its proper divisors (184619514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131622630 is a wasteful number, since it uses less digits than its factorization.

131622630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 131622630 is about 11472.6906172876. The cubic root of 131622630 is about 508.6786633773.

Adding to 131622630 its reverse (36226131), we get a palindrome (167848761).

The spelling of 131622630 in words is "one hundred thirty-one million, six hundred twenty-two thousand, six hundred thirty".