40120131 has 4 divisors (see below), whose sum is σ = 53493512. Its totient is φ = 26746752.

The previous prime is 40120121. The next prime is 40120133. The reversal of 40120131 is 13102104.

It is a happy number.

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

It is not a de Polignac number, because 40120131 - 2¹⁵ = 40087363 is a prime.

It is a super-2 number, since 2×40120131² = 3219249822914322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40120133) 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, 6686686 + ... + 6686691.

It is an arithmetic number, because the mean of its divisors is an integer number (13373378).

Almost surely, 2^40120131 is an apocalyptic number.

40120131 is a deficient number, since it is larger than the sum of its proper divisors (13373381).

40120131 is a wasteful number, since it uses less digits than its factorization.

40120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373380.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40120131 is about 6334.0453897963. The cubic root of 40120131 is about 342.3372156979.

Adding to 40120131 its reverse (13102104), we get a palindrome (53222235).

The spelling of 40120131 in words is "forty million, one hundred twenty thousand, one hundred thirty-one".