31000231342 has 4 divisors (see below), whose sum is σ = 46500347016. Its totient is φ = 15500115670.

The previous prime is 31000231277. The next prime is 31000231369. The reversal of 31000231342 is 24313200013.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×31000231342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7750057834 + ... + 7750057837.

It is an arithmetic number, because the mean of its divisors is an integer number (11625086754).

Almost surely, 2^31000231342 is an apocalyptic number.

31000231342 is a deficient number, since it is larger than the sum of its proper divisors (15500115674).

31000231342 is a wasteful number, since it uses less digits than its factorization.

31000231342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15500115673.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31000231342 its reverse (24313200013), we get a palindrome (55313431355).

The spelling of 31000231342 in words is "thirty-one billion, two hundred thirty-one thousand, three hundred forty-two".