1531140120 has 48 divisors (see below), whose sum is σ = 4976206560. Its totient is φ = 408303936.

The previous prime is 1531140049. The next prime is 1531140157. The reversal of 1531140120 is 210411351.

1531140120 is a `hidden beast` number, since 1 + 531 + 14 + 0 + 120 = 666.

It is a super-2 number, since 2×1531140120² = 4688780134147228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1531140093 and 1531140102.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2126224 + ... + 2126943.

It is an arithmetic number, because the mean of its divisors is an integer number (103670970).

Almost surely, 2^1531140120 is an apocalyptic number.

1531140120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531140120 is an abundant number, since it is smaller than the sum of its proper divisors (3445066440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1531140120 is a wasteful number, since it uses less digits than its factorization.

1531140120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253184 (or 4253177 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1531140120 is about 39129.7855859191. The cubic root of 1531140120 is about 1152.5815025734.

Adding to 1531140120 its reverse (210411351), we get a palindrome (1741551471).

The spelling of 1531140120 in words is "one billion, five hundred thirty-one million, one hundred forty thousand, one hundred twenty".