1011431430 has 48 divisors (see below), whose sum is σ = 2642983200. Its totient is φ = 268354944.

The previous prime is 1011431413. The next prime is 1011431453. The reversal of 1011431430 is 341341101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10327 + ... + 46146.

It is an arithmetic number, because the mean of its divisors is an integer number (55062150).

Almost surely, 2^1011431430 is an apocalyptic number.

1011431430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011431430 is an abundant number, since it is smaller than the sum of its proper divisors (1631551770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011431430 is a wasteful number, since it uses less digits than its factorization.

1011431430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56685 (or 56682 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1011431430 is about 31803.0097632284. The cubic root of 1011431430 is about 1003.7960484492.

Adding to 1011431430 its reverse (341341101), we get a palindrome (1352772531).

The spelling of 1011431430 in words is "one billion, eleven million, four hundred thirty-one thousand, four hundred thirty".