2620820831 has 2 divisors, whose sum is σ = 2620820832. Its totient is φ = 2620820830.

The previous prime is 2620820809. The next prime is 2620820849. The reversal of 2620820831 is 1380280262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2620820831 - 2¹⁴ = 2620804447 is a prime.

It is a super-2 number, since 2×2620820831² = 13737403656407061122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620820801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310410415 + 1310410416.

It is an arithmetic number, because the mean of its divisors is an integer number (1310410416).

Almost surely, 2^2620820831 is an apocalyptic number.

2620820831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620820831 is an equidigital number, since it uses as much as digits as its factorization.

2620820831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 2620820831 is about 51193.9530706508. The cubic root of 2620820831 is about 1378.7296351970.

The spelling of 2620820831 in words is "two billion, six hundred twenty million, eight hundred twenty thousand, eight hundred thirty-one".