40349031 has 4 divisors (see below), whose sum is σ = 53798712. Its totient is φ = 26899352.

The previous prime is 40349009. The next prime is 40349047. The reversal of 40349031 is 13094304.

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

It is a cyclic number.

It is not a de Polignac number, because 40349031 - 2⁶ = 40348967 is a prime.

It is a super-2 number, since 2×40349031² = 3256088605277922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40348992 and 40349010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40349131) 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, 6724836 + ... + 6724841.

It is an arithmetic number, because the mean of its divisors is an integer number (13449678).

Almost surely, 2^40349031 is an apocalyptic number.

40349031 is a deficient number, since it is larger than the sum of its proper divisors (13449681).

40349031 is a wasteful number, since it uses less digits than its factorization.

40349031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13449680.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40349031 is about 6352.0887115972. The cubic root of 40349031 is about 342.9870343905.

The spelling of 40349031 in words is "forty million, three hundred forty-nine thousand, thirty-one".