40531310420 has 24 divisors (see below), whose sum is σ = 85120575624. Its totient is φ = 16211605376.

The previous prime is 40531310411. The next prime is 40531310467. The reversal of 40531310420 is 2401313504.

It can be written as a sum of positive squares in 4 ways, for example, as 241989136 + 40289321284 = 15556^2 + 200722^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388922 + ... + 481998.

It is an arithmetic number, because the mean of its divisors is an integer number (3546690651).

Almost surely, 2^40531310420 is an apocalyptic number.

It is an amenable number.

40531310420 is an abundant number, since it is smaller than the sum of its proper divisors (44589265204).

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

40531310420 is a wasteful number, since it uses less digits than its factorization.

40531310420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114859 (or 114857 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 40531310420 its reverse (2401313504), we get a palindrome (42932623924).

The spelling of 40531310420 in words is "forty billion, five hundred thirty-one million, three hundred ten thousand, four hundred twenty".