431332121000 has 64 divisors (see below), whose sum is σ = 1101073296960. Its totient is φ = 156848040000.

The previous prime is 431332120981. The next prime is 431332121023. The reversal of 431332121000 is 121233134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19595006 + ... + 19617005.

It is an arithmetic number, because the mean of its divisors is an integer number (17204270265).

Almost surely, 2^431332121000 is an apocalyptic number.

431332121000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431332121000 is an abundant number, since it is smaller than the sum of its proper divisors (669741175960).

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

431332121000 is a wasteful number, since it uses less digits than its factorization.

431332121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39212043 (or 39212029 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 431332121000 its reverse (121233134), we get a palindrome (431453354134).

The spelling of 431332121000 in words is "four hundred thirty-one billion, three hundred thirty-two million, one hundred twenty-one thousand".