1512123231 has 16 divisors (see below), whose sum is σ = 2055694464. Its totient is φ = 988344864.

The previous prime is 1512123229. The next prime is 1512123253. The reversal of 1512123231 is 1323212151.

It is not a de Polignac number, because 1512123231 - 2¹ = 1512123229 is a prime.

It is a super-2 number, since 2×1512123231² = 4573033331459758722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1512123198 and 1512123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1512123031) 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, 300720 + ... + 305706.

It is an arithmetic number, because the mean of its divisors is an integer number (128480904).

Almost surely, 2^1512123231 is an apocalyptic number.

1512123231 is a deficient number, since it is larger than the sum of its proper divisors (543571233).

1512123231 is a wasteful number, since it uses less digits than its factorization.

1512123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6950.

The product of its digits is 360, while the sum is 21.

The square root of 1512123231 is about 38886.0287378385. The cubic root of 1512123231 is about 1147.7898903537.

Adding to 1512123231 its reverse (1323212151), we get a palindrome (2835335382).

The spelling of 1512123231 in words is "one billion, five hundred twelve million, one hundred twenty-three thousand, two hundred thirty-one".