1031321040432 has 40 divisors (see below), whose sum is σ = 2696345381184. Its totient is φ = 339631827264.

The previous prime is 1031321040419. The next prime is 1031321040439. The reversal of 1031321040432 is 2340401231301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1031321040439) 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, 129428878 + ... + 129436845.

Almost surely, 2^{1031321040432} is an apocalyptic number.

1031321040432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031321040432 is an abundant number, since it is smaller than the sum of its proper divisors (1665024340752).

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

1031321040432 is a wasteful number, since it uses less digits than its factorization.

1031321040432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258865817 (or 258865811 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1031321040432 its reverse (2340401231301), we get a palindrome (3371722271733).

The spelling of 1031321040432 in words is "one trillion, thirty-one billion, three hundred twenty-one million, forty thousand, four hundred thirty-two".