40831351 has 4 divisors (see below), whose sum is σ = 44543304. Its totient is φ = 37119400.

The previous prime is 40831327. The next prime is 40831393. The reversal of 40831351 is 15313804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40831351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1855960 + ... + 1855981.

It is an arithmetic number, because the mean of its divisors is an integer number (11135826).

Almost surely, 2^40831351 is an apocalyptic number.

40831351 is a deficient number, since it is larger than the sum of its proper divisors (3711953).

40831351 is a wasteful number, since it uses less digits than its factorization.

40831351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711952.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40831351 is about 6389.9413925325. The cubic root of 40831351 is about 344.3482788502.

The spelling of 40831351 in words is "forty million, eight hundred thirty-one thousand, three hundred fifty-one".