420344313051531 has 32 divisors (see below), whose sum is σ = 657282769920000. Its totient is φ = 236210995406880.

The previous prime is 420344313051451. The next prime is 420344313051547. The reversal of 420344313051531 is 135150313443024.

It is not a de Polignac number, because 420344313051531 - 2¹¹ = 420344313049483 is a prime.

It is a super-2 number, since 2×420344313051531² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420344313051531.

It is not an unprimeable number, because it can be changed into a prime (420344313041531) 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, 7131945031 + ... + 7132003968.

It is an arithmetic number, because the mean of its divisors is an integer number (20540086560000).

Almost surely, 2^{420344313051531} is an apocalyptic number.

420344313051531 is a deficient number, since it is larger than the sum of its proper divisors (236938456868469).

420344313051531 is a wasteful number, since it uses less digits than its factorization.

420344313051531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263949079.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 420344313051531 its reverse (135150313443024), we get a palindrome (555494626494555).

The spelling of 420344313051531 in words is "four hundred twenty trillion, three hundred forty-four billion, three hundred thirteen million, fifty-one thousand, five hundred thirty-one".