400340131323429 has 32 divisors (see below), whose sum is σ = 602568150249600. Its totient is φ = 234195576975360.

The previous prime is 400340131323409. The next prime is 400340131323479. The reversal of 400340131323429 is 924323131043004.

It is not a de Polignac number, because 400340131323429 - 2⁹ = 400340131322917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400340131323409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57642124 + ... + 64212885.

It is an arithmetic number, because the mean of its divisors is an integer number (18830254695300).

Almost surely, 2^{400340131323429} is an apocalyptic number.

It is an amenable number.

400340131323429 is a deficient number, since it is larger than the sum of its proper divisors (202228018926171).

400340131323429 is a wasteful number, since it uses less digits than its factorization.

400340131323429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121858485.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 400340131323429 in words is "four hundred trillion, three hundred forty billion, one hundred thirty-one million, three hundred twenty-three thousand, four hundred twenty-nine".