40390135631 has 8 divisors (see below), whose sum is σ = 42376537728. Its totient is φ = 38446452000.

The previous prime is 40390135561. The next prime is 40390135673. The reversal of 40390135631 is 13653109304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40390135631 - 2¹⁴ = 40390119247 is a prime.

It is a super-3 number, since 3×40390135631³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40390135591 and 40390135600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40390135691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10677680 + ... + 10681461.

It is an arithmetic number, because the mean of its divisors is an integer number (5297067216).

Almost surely, 2^40390135631 is an apocalyptic number.

40390135631 is a deficient number, since it is larger than the sum of its proper divisors (1986402097).

40390135631 is a wasteful number, since it uses less digits than its factorization.

40390135631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21359233.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 40390135631 in words is "forty billion, three hundred ninety million, one hundred thirty-five thousand, six hundred thirty-one".