40631000 has 64 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 15840000.

The previous prime is 40630991. The next prime is 40631023. The reversal of 40631000 is 13604.

It is a super-2 number, since 2×40631000² = 3301756322000000, which contains 22 as substring.

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, 40505 + ... + 41495.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^40631000 is an apocalyptic number.

40631000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40631000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48746880).

40631000 is an abundant number, since it is smaller than the sum of its proper divisors (56862760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40631000 is a wasteful number, since it uses less digits than its factorization.

40631000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40631000 is about 6374.2450533377. The cubic root of 40631000 is about 343.7841398599.

Adding to 40631000 its reverse (13604), we get a palindrome (40644604).

The spelling of 40631000 in words is "forty million, six hundred thirty-one thousand".