1011431003243 has 16 divisors (see below), whose sum is σ = 1073475004800. Its totient is φ = 950277407040.

The previous prime is 1011431003237. The next prime is 1011431003269. The reversal of 1011431003243 is 3423001341101.

It is a cyclic number.

It is not a de Polignac number, because 1011431003243 - 2⁴ = 1011431003227 is a prime.

It is a super-2 number, since 2×1011431003243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011431003203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801455 + ... + 4058807.

It is an arithmetic number, because the mean of its divisors is an integer number (67092187800).

Almost surely, 2^{1011431003243} is an apocalyptic number.

1011431003243 is a deficient number, since it is larger than the sum of its proper divisors (62044001557).

1011431003243 is a wasteful number, since it uses less digits than its factorization.

1011431003243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259082.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1011431003243 its reverse (3423001341101), we get a palindrome (4434432344344).

The spelling of 1011431003243 in words is "one trillion, eleven billion, four hundred thirty-one million, three thousand, two hundred forty-three".