131425551 has 16 divisors (see below), whose sum is σ = 196495200. Its totient is φ = 86811264.

The previous prime is 131425549. The next prime is 131425577. The reversal of 131425551 is 155524131.

It is not a de Polignac number, because 131425551 - 2¹ = 131425549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131425051) 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, 19386 + ... + 25271.

It is an arithmetic number, because the mean of its divisors is an integer number (12280950).

Almost surely, 2^131425551 is an apocalyptic number.

131425551 is a deficient number, since it is larger than the sum of its proper divisors (65069649).

131425551 is a wasteful number, since it uses less digits than its factorization.

131425551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44775 (or 44769 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 131425551 is about 11464.0983509389. The cubic root of 131425551 is about 508.4246544763.

Adding to 131425551 its reverse (155524131), we get a palindrome (286949682).

The spelling of 131425551 in words is "one hundred thirty-one million, four hundred twenty-five thousand, five hundred fifty-one".