40361631 has 4 divisors (see below), whose sum is σ = 53815512. Its totient is φ = 26907752.

The previous prime is 40361623. The next prime is 40361639. The reversal of 40361631 is 13616304.

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

It is an interprime number because it is at equal distance from previous prime (40361623) and next prime (40361639).

It is a cyclic number.

It is not a de Polignac number, because 40361631 - 2³ = 40361623 is a prime.

It is a super-2 number, since 2×40361631² = 3258122513960322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40361639) 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, 6726936 + ... + 6726941.

It is an arithmetic number, because the mean of its divisors is an integer number (13453878).

Almost surely, 2^40361631 is an apocalyptic number.

40361631 is a deficient number, since it is larger than the sum of its proper divisors (13453881).

40361631 is a wasteful number, since it uses less digits than its factorization.

40361631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453880.

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

The square root of 40361631 is about 6353.0804339312. The cubic root of 40361631 is about 343.0227327849.

Adding to 40361631 its reverse (13616304), we get a palindrome (53977935).

The spelling of 40361631 in words is "forty million, three hundred sixty-one thousand, six hundred thirty-one".