1153431503 has 4 divisors (see below), whose sum is σ = 1318207440. Its totient is φ = 988655568.

The previous prime is 1153431491. The next prime is 1153431509. The reversal of 1153431503 is 3051343511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153431503 - 2¹⁴ = 1153415119 is a prime.

It is a super-2 number, since 2×1153431503² = 2660808464225678018, which contains 22 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 (1153431509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82387958 + ... + 82387971.

It is an arithmetic number, because the mean of its divisors is an integer number (329551860).

Almost surely, 2^1153431503 is an apocalyptic number.

1153431503 is a deficient number, since it is larger than the sum of its proper divisors (164775937).

1153431503 is an equidigital number, since it uses as much as digits as its factorization.

1153431503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164775936.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1153431503 is about 33962.2069807014. The cubic root of 1153431503 is about 1048.7305908198.

The spelling of 1153431503 in words is "one billion, one hundred fifty-three million, four hundred thirty-one thousand, five hundred three".