2102819031 has 6 divisors (see below), whose sum is σ = 3037405280. Its totient is φ = 1401879348.

The previous prime is 2102819021. The next prime is 2102819051. The reversal of 2102819031 is 1309182012.

It is not a de Polignac number, because 2102819031 - 2⁶ = 2102818967 is a prime.

It is a super-2 number, since 2×2102819031² = 8843695754271557922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102818986 and 2102819004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102819021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116823271 + ... + 116823288.

Almost surely, 2^2102819031 is an apocalyptic number.

2102819031 is a deficient number, since it is larger than the sum of its proper divisors (934586249).

2102819031 is a wasteful number, since it uses less digits than its factorization.

2102819031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233646565 (or 233646562 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2102819031 is about 45856.5047839453. The cubic root of 2102819031 is about 1281.1519234354.

The spelling of 2102819031 in words is "two billion, one hundred two million, eight hundred nineteen thousand, thirty-one".