1200040213431 has 16 divisors (see below), whose sum is σ = 1601275038464. Its totient is φ = 799416281664.

The previous prime is 1200040213429. The next prime is 1200040213439. The reversal of 1200040213431 is 1343120400021.

It is not a de Polignac number, because 1200040213431 - 2¹ = 1200040213429 is a prime.

It is a super-2 number, since 2×1200040213431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200040213398 and 1200040213407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200040213439) 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, 31571820 + ... + 31609806.

It is an arithmetic number, because the mean of its divisors is an integer number (100079689904).

Almost surely, 2^{1200040213431} is an apocalyptic number.

1200040213431 is a deficient number, since it is larger than the sum of its proper divisors (401234825033).

1200040213431 is a wasteful number, since it uses less digits than its factorization.

1200040213431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45750.

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

Adding to 1200040213431 its reverse (1343120400021), we get a palindrome (2543160613452).

The spelling of 1200040213431 in words is "one trillion, two hundred billion, forty million, two hundred thirteen thousand, four hundred thirty-one".