2115021031 has 2 divisors, whose sum is σ = 2115021032. Its totient is φ = 2115021030.

The previous prime is 2115021001. The next prime is 2115021037. The reversal of 2115021031 is 1301205112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2115021031 - 2⁷ = 2115020903 is a prime.

It is a super-2 number, since 2×2115021031² = 8946627923144605922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2115020996 and 2115021014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057510515 + 1057510516.

It is an arithmetic number, because the mean of its divisors is an integer number (1057510516).

Almost surely, 2^2115021031 is an apocalyptic number.

2115021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115021031 is an equidigital number, since it uses as much as digits as its factorization.

2115021031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2115021031 is about 45989.3578015610. The cubic root of 2115021031 is about 1283.6251867996.

Adding to 2115021031 its reverse (1301205112), we get a palindrome (3416226143).

The spelling of 2115021031 in words is "two billion, one hundred fifteen million, twenty-one thousand, thirty-one".