1321431465052 has 24 divisors (see below), whose sum is σ = 2353228737552. Its totient is φ = 649180272000.

The previous prime is 1321431465023. The next prime is 1321431465073. The reversal of 1321431465052 is 2505641341231.

It is a super-2 number, since 2×1321431465052² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12431313 + ... + 12537160.

It is an arithmetic number, because the mean of its divisors is an integer number (98051197398).

Almost surely, 2^{1321431465052} is an apocalyptic number.

It is an amenable number.

1321431465052 is a deficient number, since it is larger than the sum of its proper divisors (1031797272500).

1321431465052 is a wasteful number, since it uses less digits than its factorization.

1321431465052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968709 (or 24968707 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1321431465052 in words is "one trillion, three hundred twenty-one billion, four hundred thirty-one million, four hundred sixty-five thousand, fifty-two".