131520454 has 16 divisors (see below), whose sum is σ = 216466992. Its totient is φ = 59555808.

The previous prime is 131520439. The next prime is 131520461. The reversal of 131520454 is 454025131.

It is a happy number.

It is a super-2 number, since 2×131520454² = 34595259640732232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46344 + ... + 49099.

It is an arithmetic number, because the mean of its divisors is an integer number (13529187).

Almost surely, 2^131520454 is an apocalyptic number.

131520454 is a deficient number, since it is larger than the sum of its proper divisors (84946538).

131520454 is a wasteful number, since it uses less digits than its factorization.

131520454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95511.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 131520454 is about 11468.2367432836. The cubic root of 131520454 is about 508.5470036319.

Adding to 131520454 its reverse (454025131), we get a palindrome (585545585).

The spelling of 131520454 in words is "one hundred thirty-one million, five hundred twenty thousand, four hundred fifty-four".