1131256472 has 32 divisors (see below), whose sum is σ = 2243674080. Its totient is φ = 533617920.

The previous prime is 1131256457. The next prime is 1131256487. The reversal of 1131256472 is 2746521311.

It is an interprime number because it is at equal distance from previous prime (1131256457) and next prime (1131256487).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28679 + ... + 55542.

It is an arithmetic number, because the mean of its divisors is an integer number (70114815).

Almost surely, 2^1131256472 is an apocalyptic number.

It is an amenable number.

1131256472 is a deficient number, since it is larger than the sum of its proper divisors (1112417608).

1131256472 is a wasteful number, since it uses less digits than its factorization.

1131256472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84323 (or 84319 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1131256472 is about 33634.1563295410. The cubic root of 1131256472 is about 1041.9663464189.

Adding to 1131256472 its reverse (2746521311), we get a palindrome (3877777783).

The spelling of 1131256472 in words is "one billion, one hundred thirty-one million, two hundred fifty-six thousand, four hundred seventy-two".