1131953471 has 8 divisors (see below), whose sum is σ = 1235706624. Its totient is φ = 1028341720.

The previous prime is 1131953467. The next prime is 1131953479. The reversal of 1131953471 is 1743591311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1131953471 - 2² = 1131953467 is a prime.

It is a super-3 number, since 3×1131953471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131953479) 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, 18245 + ... + 50958.

It is an arithmetic number, because the mean of its divisors is an integer number (154463328).

Almost surely, 2^1131953471 is an apocalyptic number.

1131953471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131953471 is a deficient number, since it is larger than the sum of its proper divisors (103753153).

1131953471 is a wasteful number, since it uses less digits than its factorization.

1131953471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70701.

The product of its digits is 11340, while the sum is 35.

The square root of 1131953471 is about 33644.5162099264. The cubic root of 1131953471 is about 1042.1802974301.

The spelling of 1131953471 in words is "one billion, one hundred thirty-one million, nine hundred fifty-three thousand, four hundred seventy-one".