33431131021442 has 64 divisors (see below), whose sum is σ = 64028863991808. Its totient is φ = 12714518040000.

The previous prime is 33431131021367. The next prime is 33431131021469. The reversal of 33431131021442 is 24412013113433.

It is a super-2 number, since 2×33431131021442² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33431131021399 and 33431131021408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14031998 + ... + 16240665.

It is an arithmetic number, because the mean of its divisors is an integer number (1000450999872).

Almost surely, 2^{33431131021442} is an apocalyptic number.

33431131021442 is a deficient number, since it is larger than the sum of its proper divisors (30597732970366).

33431131021442 is a wasteful number, since it uses less digits than its factorization.

33431131021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30272855.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 33431131021442 its reverse (24412013113433), we get a palindrome (57843144134875).

The spelling of 33431131021442 in words is "thirty-three trillion, four hundred thirty-one billion, one hundred thirty-one million, twenty-one thousand, four hundred forty-two".