1011431420 has 24 divisors (see below), whose sum is σ = 2192523648. Its totient is φ = 391521600.

The previous prime is 1011431413. The next prime is 1011431453. The reversal of 1011431420 is 241341101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815051 + ... + 816290.

It is an arithmetic number, because the mean of its divisors is an integer number (91355152).

Almost surely, 2^1011431420 is an apocalyptic number.

1011431420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011431420 is an abundant number, since it is smaller than the sum of its proper divisors (1181092228).

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

1011431420 is a wasteful number, since it uses less digits than its factorization.

1011431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631381 (or 1631379 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1011431420 is about 31803.0096060106. The cubic root of 1011431420 is about 1003.7960451410.

Adding to 1011431420 its reverse (241341101), we get a palindrome (1252772521).

The spelling of 1011431420 in words is "one billion, eleven million, four hundred thirty-one thousand, four hundred twenty".