1013440431 has 8 divisors (see below), whose sum is σ = 1430739504. Its totient is φ = 635884160.

The previous prime is 1013440399. The next prime is 1013440433. The reversal of 1013440431 is 1340443101.

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 1013440431 - 2⁵ = 1013440399 is a prime.

It is a super-2 number, since 2×1013440431² = 2054123014370931522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1013440398 and 1013440407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013440433) 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, 9935640 + ... + 9935741.

It is an arithmetic number, because the mean of its divisors is an integer number (178842438).

Almost surely, 2^1013440431 is an apocalyptic number.

1013440431 is a deficient number, since it is larger than the sum of its proper divisors (417299073).

1013440431 is a wasteful number, since it uses less digits than its factorization.

1013440431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19871401.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1013440431 is about 31834.5791710838. The cubic root of 1013440431 is about 1004.4602205230.

Adding to 1013440431 its reverse (1340443101), we get a palindrome (2353883532).

The spelling of 1013440431 in words is "one billion, thirteen million, four hundred forty thousand, four hundred thirty-one".