1231233130 has 16 divisors (see below), whose sum is σ = 2216696544. Its totient is φ = 492387280.

The previous prime is 1231233121. The next prime is 1231233131. The reversal of 1231233130 is 313321321.

It is a junction number, because it is equal to n+sod(n) for n = 1231233098 and 1231233107.

It is not an unprimeable number, because it can be changed into a prime (1231233131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49869 + ... + 70351.

It is an arithmetic number, because the mean of its divisors is an integer number (138543534).

Almost surely, 2^1231233130 is an apocalyptic number.

1231233130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231233130 is a deficient number, since it is larger than the sum of its proper divisors (985463414).

1231233130 is a wasteful number, since it uses less digits than its factorization.

1231233130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26501.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1231233130 is about 35088.9317306754. The cubic root of 1231233130 is about 1071.7992060293.

Adding to 1231233130 its reverse (313321321), we get a palindrome (1544554451).

It can be divided in two parts, 123123 and 3130, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1231233130 in words is "one billion, two hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty".