1020970832391 has 64 divisors (see below), whose sum is σ = 1531831971840. Its totient is φ = 672039244800.

The previous prime is 1020970832377. The next prime is 1020970832407. The reversal of 1020970832391 is 1932380790201.

It is not a de Polignac number, because 1020970832391 - 2⁷ = 1020970832263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020970832351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 528178461 + ... + 528180393.

It is an arithmetic number, because the mean of its divisors is an integer number (23934874560).

Almost surely, 2^{1020970832391} is an apocalyptic number.

1020970832391 is a deficient number, since it is larger than the sum of its proper divisors (510861139449).

1020970832391 is a wasteful number, since it uses less digits than its factorization.

1020970832391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 1020970832391 in words is "one trillion, twenty billion, nine hundred seventy million, eight hundred thirty-two thousand, three hundred ninety-one".