1154313531 has 48 divisors (see below), whose sum is σ = 2043144480. Its totient is φ = 641753280.

The previous prime is 1154313529. The next prime is 1154313577. The reversal of 1154313531 is 1353134511.

It is a happy number.

1154313531 is a `hidden beast` number, since 115 + 4 + 3 + 13 + 531 = 666.

It is not a de Polignac number, because 1154313531 - 2¹ = 1154313529 is a prime.

It is a super-2 number, since 2×1154313531² = 2664879455699375922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1154313495 and 1154313504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154313521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37161 + ... + 60741.

It is an arithmetic number, because the mean of its divisors is an integer number (42565510).

Almost surely, 2^1154313531 is an apocalyptic number.

1154313531 is a deficient number, since it is larger than the sum of its proper divisors (888830949).

1154313531 is a wasteful number, since it uses less digits than its factorization.

1154313531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23641 (or 23628 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1154313531 is about 33975.1899332439. The cubic root of 1154313531 is about 1048.9978438119.

The spelling of 1154313531 in words is "one billion, one hundred fifty-four million, three hundred thirteen thousand, five hundred thirty-one".