131913045 has 24 divisors (see below), whose sum is σ = 249436512. Its totient is φ = 63957600.

The previous prime is 131913007. The next prime is 131913059. The reversal of 131913045 is 540319131.

It is not a de Polignac number, because 131913045 - 2⁸ = 131912789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132751 + ... + 133740.

It is an arithmetic number, because the mean of its divisors is an integer number (10393188).

Almost surely, 2^131913045 is an apocalyptic number.

131913045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131913045 is a deficient number, since it is larger than the sum of its proper divisors (117523467).

131913045 is a wasteful number, since it uses less digits than its factorization.

131913045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266513 (or 266510 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 131913045 is about 11485.3404390118. The cubic root of 131913045 is about 509.0525084043.

The spelling of 131913045 in words is "one hundred thirty-one million, nine hundred thirteen thousand, forty-five".