1011552431 has 4 divisors (see below), whose sum is σ = 1012077672. Its totient is φ = 1011027192.

The previous prime is 1011552403. The next prime is 1011552499. The reversal of 1011552431 is 1342551101.

1011552431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1011552431 - 2¹⁴ = 1011536047 is a prime.

It is a super-2 number, since 2×1011552431² = 2046476641324019522, 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 = 1011552397 and 1011552406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011552631) 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, 259721 + ... + 263586.

It is an arithmetic number, because the mean of its divisors is an integer number (253019418).

Almost surely, 2^1011552431 is an apocalyptic number.

1011552431 is a deficient number, since it is larger than the sum of its proper divisors (525241).

1011552431 is an equidigital number, since it uses as much as digits as its factorization.

1011552431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525240.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1011552431 is about 31804.9120577310. The cubic root of 1011552431 is about 1003.8360760374.

The spelling of 1011552431 in words is "one billion, eleven million, five hundred fifty-two thousand, four hundred thirty-one".