431431022550 has 48 divisors (see below), whose sum is σ = 1167217025472. Its totient is φ = 104589338400.

The previous prime is 431431022549. The next prime is 431431022587. The reversal of 431431022550 is 55220134134.

It is a super-2 number, since 2×431431022550² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130735024 + ... + 130738323.

It is an arithmetic number, because the mean of its divisors is an integer number (24317021364).

Almost surely, 2^431431022550 is an apocalyptic number.

431431022550 is an abundant number, since it is smaller than the sum of its proper divisors (735786002922).

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

431431022550 is a wasteful number, since it uses less digits than its factorization.

431431022550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261473373 (or 261473368 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 431431022550 its reverse (55220134134), we get a palindrome (486651156684).

The spelling of 431431022550 in words is "four hundred thirty-one billion, four hundred thirty-one million, twenty-two thousand, five hundred fifty".