1230031155 has 32 divisors (see below), whose sum is σ = 2019790080. Its totient is φ = 638951040.

The previous prime is 1230031133. The next prime is 1230031163. The reversal of 1230031155 is 5511300321.

It is not a de Polignac number, because 1230031155 - 2¹⁴ = 1230014771 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104940 + ... + 116070.

It is an arithmetic number, because the mean of its divisors is an integer number (63118440).

Almost surely, 2^1230031155 is an apocalyptic number.

1230031155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230031155 is a deficient number, since it is larger than the sum of its proper divisors (789758925).

1230031155 is a wasteful number, since it uses less digits than its factorization.

1230031155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11331.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1230031155 is about 35071.7999965784. The cubic root of 1230031155 is about 1071.4503158889.

Adding to 1230031155 its reverse (5511300321), we get a palindrome (6741331476).

The spelling of 1230031155 in words is "one billion, two hundred thirty million, thirty-one thousand, one hundred fifty-five".