1012203131 has 4 divisors (see below), whose sum is σ = 1065477000. Its totient is φ = 958929264.

The previous prime is 1012203107. The next prime is 1012203229. The reversal of 1012203131 is 1313022101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313022101 = 179 ⋅7335319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012203131 is a prime.

It is a super-2 number, since 2×1012203131² = 2049110356812406322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012203331) 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, 26636906 + ... + 26636943.

It is an arithmetic number, because the mean of its divisors is an integer number (266369250).

Almost surely, 2^1012203131 is an apocalyptic number.

1012203131 is a deficient number, since it is larger than the sum of its proper divisors (53273869).

1012203131 is an equidigital number, since it uses as much as digits as its factorization.

1012203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53273868.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1012203131 is about 31815.1399651172. The cubic root of 1012203131 is about 1004.0512753372.

Adding to 1012203131 its reverse (1313022101), we get a palindrome (2325225232).

The spelling of 1012203131 in words is "one billion, twelve million, two hundred three thousand, one hundred thirty-one".