1020120231 has 16 divisors (see below), whose sum is σ = 1469153504. Its totient is φ = 625895424.

The previous prime is 1020120197. The next prime is 1020120247. The reversal of 1020120231 is 1320210201.

It is not a de Polignac number, because 1020120231 - 2⁷ = 1020120103 is a prime.

It is a super-2 number, since 2×1020120231² = 2081290571390986722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020120251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25666 + ... + 51951.

It is an arithmetic number, because the mean of its divisors is an integer number (91822094).

Almost surely, 2^1020120231 is an apocalyptic number.

1020120231 is a deficient number, since it is larger than the sum of its proper divisors (449033273).

1020120231 is a wasteful number, since it uses less digits than its factorization.

1020120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77970.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1020120231 is about 31939.3210791964. The cubic root of 1020120231 is about 1006.6622593967.

Adding to 1020120231 its reverse (1320210201), we get a palindrome (2340330432).

The spelling of 1020120231 in words is "one billion, twenty million, one hundred twenty thousand, two hundred thirty-one".