1000423431 has 24 divisors (see below), whose sum is σ = 1676148864. Its totient is φ = 563135760.

The previous prime is 1000423409. The next prime is 1000423439. The reversal of 1000423431 is 1343240001.

It is not a de Polignac number, because 1000423431 - 2¹³ = 1000415239 is a prime.

It is a super-2 number, since 2×1000423431² = 2001694082587623522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000423439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114285 + ... + 122726.

It is an arithmetic number, because the mean of its divisors is an integer number (69839536).

Almost surely, 2^1000423431 is an apocalyptic number.

1000423431 is a deficient number, since it is larger than the sum of its proper divisors (675725433).

1000423431 is a wasteful number, since it uses less digits than its factorization.

1000423431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237091 (or 237088 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1000423431 is about 31629.4709250724. The cubic root of 1000423431 is about 1000.1411237498.

Adding to 1000423431 its reverse (1343240001), we get a palindrome (2343663432).

The spelling of 1000423431 in words is "one billion, four hundred twenty-three thousand, four hundred thirty-one".