1020232131 has 4 divisors (see below), whose sum is σ = 1360309512. Its totient is φ = 680154752.

The previous prime is 1020232123. The next prime is 1020232133. The reversal of 1020232131 is 1312320201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020232131 - 2³ = 1020232123 is a prime.

It is a super-2 number, since 2×1020232131² = 2081747202249602322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1020232131.

It is not an unprimeable number, because it can be changed into a prime (1020232133) 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, 170038686 + ... + 170038691.

It is an arithmetic number, because the mean of its divisors is an integer number (340077378).

Almost surely, 2^1020232131 is an apocalyptic number.

1020232131 is a deficient number, since it is larger than the sum of its proper divisors (340077381).

1020232131 is an equidigital number, since it uses as much as digits as its factorization.

1020232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340077380.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1020232131 is about 31941.0727903745. The cubic root of 1020232131 is about 1006.6990659694.

Adding to 1020232131 its reverse (1312320201), we get a palindrome (2332552332).

The spelling of 1020232131 in words is "one billion, twenty million, two hundred thirty-two thousand, one hundred thirty-one".