40651131 has 16 divisors (see below), whose sum is σ = 58792608. Its totient is φ = 24883200.

The previous prime is 40651087. The next prime is 40651151. The reversal of 40651131 is 13115604.

It is not a de Polignac number, because 40651131 - 2⁹ = 40650619 is a prime.

It is a super-2 number, since 2×40651131² = 3305028903158322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40651098 and 40651107.

It is not an unprimeable number, because it can be changed into a prime (40651151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7630 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (3674538).

Almost surely, 2^40651131 is an apocalyptic number.

40651131 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40651131 is a deficient number, since it is larger than the sum of its proper divisors (18141477).

40651131 is a wasteful number, since it uses less digits than its factorization.

40651131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19502.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 40651131 is about 6375.8239467539. The cubic root of 40651131 is about 343.8409074828.

Adding to 40651131 its reverse (13115604), we get a palindrome (53766735).

The spelling of 40651131 in words is "forty million, six hundred fifty-one thousand, one hundred thirty-one".