80657212031 has 16 divisors (see below), whose sum is σ = 90054856320. Its totient is φ = 71604479520.

The previous prime is 80657211983. The next prime is 80657212033. The reversal of 80657212031 is 13021275608.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80657212031 - 2⁶ = 80657211967 is a prime.

It is a super-2 number, since 2×80657212031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80657211982 and 80657212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80657212033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2661641 + ... + 2691773.

It is an arithmetic number, because the mean of its divisors is an integer number (5628428520).

Almost surely, 2^80657212031 is an apocalyptic number.

80657212031 is a deficient number, since it is larger than the sum of its proper divisors (9397644289).

80657212031 is a wasteful number, since it uses less digits than its factorization.

80657212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35846.

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 80657212031 its reverse (13021275608), we get a palindrome (93678487639).

The spelling of 80657212031 in words is "eighty billion, six hundred fifty-seven million, two hundred twelve thousand, thirty-one".