1151512131 has 32 divisors (see below), whose sum is σ = 1916006400. Its totient is φ = 597624480.

The previous prime is 1151512129. The next prime is 1151512133. The reversal of 1151512131 is 1312151511.

It is an interprime number because it is at equal distance from previous prime (1151512129) and next prime (1151512133).

It is not a de Polignac number, because 1151512131 - 2¹ = 1151512129 is a prime.

It is a super-2 number, since 2×1151512131² = 2651960375680322322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1151512098 and 1151512107.

It is not an unprimeable number, because it can be changed into a prime (1151512133) by changing a digit.

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, 372450 + ... + 375528.

It is an arithmetic number, because the mean of its divisors is an integer number (59875200).

Almost surely, 2^1151512131 is an apocalyptic number.

1151512131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1151512131 is a deficient number, since it is larger than the sum of its proper divisors (764494269).

1151512131 is a wasteful number, since it uses less digits than its factorization.

1151512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719.

The product of its digits is 150, while the sum is 21.

The square root of 1151512131 is about 33933.9377467455. The cubic root of 1151512131 is about 1048.1485531677.

Adding to 1151512131 its reverse (1312151511), we get a palindrome (2463663642).

The spelling of 1151512131 in words is "one billion, one hundred fifty-one million, five hundred twelve thousand, one hundred thirty-one".