11603125531 has 8 divisors (see below), whose sum is σ = 11738375424. Its totient is φ = 11468275200.

The previous prime is 11603125507. The next prime is 11603125571. The reversal of 11603125531 is 13552130611.

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 11603125531 - 2⁷ = 11603125403 is a prime.

It is a super-2 number, since 2×11603125531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11603125531.

It is not an unprimeable number, because it can be changed into a prime (11603125571) 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, 41275 + ... + 157828.

It is an arithmetic number, because the mean of its divisors is an integer number (1467296928).

Almost surely, 2^11603125531 is an apocalyptic number.

11603125531 is a deficient number, since it is larger than the sum of its proper divisors (135249893).

11603125531 is a wasteful number, since it uses less digits than its factorization.

11603125531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199781.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 11603125531 in words is "eleven billion, six hundred three million, one hundred twenty-five thousand, five hundred thirty-one".