131254045 has 16 divisors (see below), whose sum is σ = 171308592. Its totient is φ = 95961600.

The previous prime is 131254037. The next prime is 131254063. The reversal of 131254045 is 540452131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 700569 + 130553476 = 837^2 + 11426^2 .

It is not a de Polignac number, because 131254045 - 2³ = 131254037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3432 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (10706787).

Almost surely, 2^131254045 is an apocalyptic number.

It is an amenable number.

131254045 is a deficient number, since it is larger than the sum of its proper divisors (40054547).

131254045 is a wasteful number, since it uses less digits than its factorization.

131254045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112.

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

The square root of 131254045 is about 11456.6157743026. The cubic root of 131254045 is about 508.2033990817.

The spelling of 131254045 in words is "one hundred thirty-one million, two hundred fifty-four thousand, forty-five".