31233342142 has 16 divisors (see below), whose sum is σ = 49592640240. Its totient is φ = 14727508992.

The previous prime is 31233342121. The next prime is 31233342143. The reversal of 31233342142 is 24124333213.

It is a happy number.

It is a super-2 number, since 2×31233342142² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31233342142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233342143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6259203 + ... + 6264190.

It is an arithmetic number, because the mean of its divisors is an integer number (3099540015).

Almost surely, 2^31233342142 is an apocalyptic number.

31233342142 is a deficient number, since it is larger than the sum of its proper divisors (18359298098).

31233342142 is a wasteful number, since it uses less digits than its factorization.

31233342142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12523467.

The product of its digits is 10368, while the sum is 28.

Adding to 31233342142 its reverse (24124333213), we get a palindrome (55357675355).

The spelling of 31233342142 in words is "thirty-one billion, two hundred thirty-three million, three hundred forty-two thousand, one hundred forty-two".