1200000311031 has 16 divisors (see below), whose sum is σ = 1616177512800. Its totient is φ = 791949545088.

The previous prime is 1200000310967. The next prime is 1200000311051. The reversal of 1200000311031 is 1301130000021.

It is not a de Polignac number, because 1200000311031 - 2⁶ = 1200000310967 is a prime.

It is a super-2 number, since 2×1200000311031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200000310998 and 1200000311016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000311051) 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, 4608936 + ... + 4862333.

It is an arithmetic number, because the mean of its divisors is an integer number (101011094550).

Almost surely, 2^{1200000311031} is an apocalyptic number.

1200000311031 is a deficient number, since it is larger than the sum of its proper divisors (416177201769).

1200000311031 is a wasteful number, since it uses less digits than its factorization.

1200000311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471698.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 1200000311031 its reverse (1301130000021), we get a palindrome (2501130311052).

The spelling of 1200000311031 in words is "one trillion, two hundred billion, three hundred eleven thousand, thirty-one".