131921335 has 16 divisors (see below), whose sum is σ = 194838336. Its totient is φ = 83501568.

The previous prime is 131921329. The next prime is 131921369. The reversal of 131921335 is 533129131.

It is a cyclic number.

It is not a de Polignac number, because 131921335 - 2³ = 131921327 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, 144514 + ... + 145423.

It is an arithmetic number, because the mean of its divisors is an integer number (12177396).

Almost surely, 2^131921335 is an apocalyptic number.

131921335 is a deficient number, since it is larger than the sum of its proper divisors (62917001).

131921335 is a wasteful number, since it uses less digits than its factorization.

131921335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289962.

The product of its digits is 2430, while the sum is 28.

The square root of 131921335 is about 11485.7013281732. The cubic root of 131921335 is about 509.0631718857.

The spelling of 131921335 in words is "one hundred thirty-one million, nine hundred twenty-one thousand, three hundred thirty-five".