40375231 has 4 divisors (see below), whose sum is σ = 43481032. Its totient is φ = 37269432.

The previous prime is 40375213. The next prime is 40375261. The reversal of 40375231 is 13257304.

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-40375231 is a prime.

It is a super-2 number, since 2×40375231² = 3260318556606722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40375196 and 40375205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40375261) 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, 1552881 + ... + 1552906.

It is an arithmetic number, because the mean of its divisors is an integer number (10870258).

Almost surely, 2^40375231 is an apocalyptic number.

40375231 is a deficient number, since it is larger than the sum of its proper divisors (3105801).

40375231 is a wasteful number, since it uses less digits than its factorization.

40375231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105800.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 40375231 is about 6354.1506906903. The cubic root of 40375231 is about 343.0612560488.

The spelling of 40375231 in words is "forty million, three hundred seventy-five thousand, two hundred thirty-one".