1031200344431 has 4 divisors (see below), whose sum is σ = 1031231085864. Its totient is φ = 1031169603000.

The previous prime is 1031200344371. The next prime is 1031200344511. The reversal of 1031200344431 is 1344430021301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1031200344431 - 2¹⁴ = 1031200328047 is a prime.

It is a super-2 number, since 2×1031200344431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031200344431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031200346431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15320345 + ... + 15387506.

It is an arithmetic number, because the mean of its divisors is an integer number (257807771466).

Almost surely, 2^{1031200344431} is an apocalyptic number.

1031200344431 is a deficient number, since it is larger than the sum of its proper divisors (30741433).

1031200344431 is an equidigital number, since it uses as much as digits as its factorization.

1031200344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30741432.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1031200344431 its reverse (1344430021301), we get a palindrome (2375630365732).

The spelling of 1031200344431 in words is "one trillion, thirty-one billion, two hundred million, three hundred forty-four thousand, four hundred thirty-one".