40431130134421 has 8 divisors (see below), whose sum is σ = 46102465130904. Its totient is φ = 35125687718400.

The previous prime is 40431130134413. The next prime is 40431130134467. The reversal of 40431130134421 is 12443103113404.

It can be written as a sum of positive squares in 4 ways, for example, as 2621986755025 + 37809143379396 = 1619255^2 + 6148914^2 .

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 40431130134421 - 2³ = 40431130134413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431130134401) 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, 91473144880 + ... + 91473145321.

It is an arithmetic number, because the mean of its divisors is an integer number (5762808141363).

Almost surely, 2^{40431130134421} is an apocalyptic number.

It is an amenable number.

40431130134421 is a deficient number, since it is larger than the sum of its proper divisors (5671334996483).

40431130134421 is a wasteful number, since it uses less digits than its factorization.

40431130134421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182946290231.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 40431130134421 its reverse (12443103113404), we get a palindrome (52874233247825).

The spelling of 40431130134421 in words is "forty trillion, four hundred thirty-one billion, one hundred thirty million, one hundred thirty-four thousand, four hundred twenty-one".