1211431033142 has 16 divisors (see below), whose sum is σ = 1982377552464. Its totient is φ = 550640508000.

The previous prime is 1211431033139. The next prime is 1211431033157. The reversal of 1211431033142 is 2413301341121.

It is a super-3 number, since 3×1211431033142³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823592 + ... + 1761012.

It is an arithmetic number, because the mean of its divisors is an integer number (123898597029).

Almost surely, 2^{1211431033142} is an apocalyptic number.

1211431033142 is a deficient number, since it is larger than the sum of its proper divisors (770946519322).

1211431033142 is a wasteful number, since it uses less digits than its factorization.

1211431033142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996175.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1211431033142 its reverse (2413301341121), we get a palindrome (3624732374263).

The spelling of 1211431033142 in words is "one trillion, two hundred eleven billion, four hundred thirty-one million, thirty-three thousand, one hundred forty-two".