1151113431 has 8 divisors (see below), whose sum is σ = 1652880880. Its totient is φ = 708377472.

The previous prime is 1151113393. The next prime is 1151113459. The reversal of 1151113431 is 1343111511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1151113431 - 2⁷ = 1151113303 is a prime.

It is a super-2 number, since 2×1151113431² = 2650124262057183522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151113398 and 1151113407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151113531) 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, 14757826 + ... + 14757903.

It is an arithmetic number, because the mean of its divisors is an integer number (206610110).

Almost surely, 2^1151113431 is an apocalyptic number.

1151113431 is a deficient number, since it is larger than the sum of its proper divisors (501767449).

1151113431 is a wasteful number, since it uses less digits than its factorization.

1151113431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29515745.

The product of its digits is 180, while the sum is 21.

The square root of 1151113431 is about 33928.0625883648. The cubic root of 1151113431 is about 1048.0275687516.

Adding to 1151113431 its reverse (1343111511), we get a palindrome (2494224942).

It can be divided in two parts, 11511 and 13431, that added together give a palindrome (24942).

The spelling of 1151113431 in words is "one billion, one hundred fifty-one million, one hundred thirteen thousand, four hundred thirty-one".