1020102131 has 4 divisors (see below), whose sum is σ = 1021646064. Its totient is φ = 1018558200.

The previous prime is 1020102107. The next prime is 1020102157. The reversal of 1020102131 is 1312010201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312010201 = 1033 ⋅1270097.

It is a cyclic number.

It is not a de Polignac number, because 1020102131 - 2¹⁴ = 1020085747 is a prime.

It is a super-2 number, since 2×1020102131² = 2081216715341482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020102931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770975 + ... + 772296.

It is an arithmetic number, because the mean of its divisors is an integer number (255411516).

Almost surely, 2^1020102131 is an apocalyptic number.

1020102131 is a deficient number, since it is larger than the sum of its proper divisors (1543933).

1020102131 is an equidigital number, since it uses as much as digits as its factorization.

1020102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543932.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1020102131 is about 31939.0377281470. The cubic root of 1020102131 is about 1006.6563056231.

Adding to 1020102131 its reverse (1312010201), we get a palindrome (2332112332).

The spelling of 1020102131 in words is "one billion, twenty million, one hundred two thousand, one hundred thirty-one".