1230020231 has 4 divisors (see below), whose sum is σ = 1341840264. Its totient is φ = 1118200200.

The previous prime is 1230020191. The next prime is 1230020249. The reversal of 1230020231 is 1320200321.

It is a happy number.

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 1230020231 - 2³⁰ = 156278407 is a prime.

It is a super-2 number, since 2×1230020231² = 3025899537338586722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230020251) 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, 55910000 + ... + 55910021.

It is an arithmetic number, because the mean of its divisors is an integer number (335460066).

Almost surely, 2^1230020231 is an apocalyptic number.

1230020231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1230020231 is a deficient number, since it is larger than the sum of its proper divisors (111820033).

1230020231 is a wasteful number, since it uses less digits than its factorization.

1230020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111820032.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1230020231 is about 35071.6442585745. The cubic root of 1230020231 is about 1071.4471440023.

Adding to 1230020231 its reverse (1320200321), we get a palindrome (2550220552).

The spelling of 1230020231 in words is "one billion, two hundred thirty million, twenty thousand, two hundred thirty-one".