2113001531 has 2 divisors, whose sum is σ = 2113001532. Its totient is φ = 2113001530.

The previous prime is 2113001491. The next prime is 2113001557. The reversal of 2113001531 is 1351003112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2113001531 - 2³⁰ = 1039259707 is a prime.

It is a super-2 number, since 2×2113001531² = 8929550940016687922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2113001581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056500765 + 1056500766.

It is an arithmetic number, because the mean of its divisors is an integer number (1056500766).

Almost surely, 2^2113001531 is an apocalyptic number.

2113001531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113001531 is an equidigital number, since it uses as much as digits as its factorization.

2113001531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 2113001531 is about 45967.3963913555. The cubic root of 2113001531 is about 1283.2165058246.

Adding to 2113001531 its reverse (1351003112), we get a palindrome (3464004643).

The spelling of 2113001531 in words is "two billion, one hundred thirteen million, one thousand, five hundred thirty-one".