1135425231 has 12 divisors (see below), whose sum is σ = 1646114080. Its totient is φ = 754155360.

The previous prime is 1135425217. The next prime is 1135425233. The reversal of 1135425231 is 1325245311.

1135425231 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 425 + 231 = 666.

It is not a de Polignac number, because 1135425231 - 2¹⁴ = 1135408847 is a prime.

It is a super-2 number, since 2×1135425231² = 2578380910382806722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1135425195 and 1135425204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135425233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230326 + ... + 235203.

Almost surely, 2^1135425231 is an apocalyptic number.

1135425231 is a deficient number, since it is larger than the sum of its proper divisors (510688849).

1135425231 is a wasteful number, since it uses less digits than its factorization.

1135425231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465806 (or 465803 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1135425231 is about 33696.0714475738. The cubic root of 1135425231 is about 1043.2446836684.

It can be divided in two parts, 11354 and 25231, that added together give a triangular number (36585 = T₂₇₀).

The spelling of 1135425231 in words is "one billion, one hundred thirty-five million, four hundred twenty-five thousand, two hundred thirty-one".