1051431213400 has 24 divisors (see below), whose sum is σ = 2444577571620. Its totient is φ = 420572485280.

The previous prime is 1051431213383. The next prime is 1051431213457. The reversal of 1051431213400 is 43121341501.

It is a super-2 number, since 2×1051431213400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2628577834 + ... + 2628578233.

Almost surely, 2^{1051431213400} is an apocalyptic number.

1051431213400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051431213400 is an abundant number, since it is smaller than the sum of its proper divisors (1393146358220).

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

1051431213400 is a wasteful number, since it uses less digits than its factorization.

1051431213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257156083 (or 5257156074 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1051431213400 its reverse (43121341501), we get a palindrome (1094552554901).

The spelling of 1051431213400 in words is "one trillion, fifty-one billion, four hundred thirty-one million, two hundred thirteen thousand, four hundred".