31340144342 has 16 divisors (see below), whose sum is σ = 50634915072. Its totient is φ = 14462245440.

The previous prime is 31340144309. The next prime is 31340144347. The reversal of 31340144342 is 24344104313.

It is a happy number.

It is a super-2 number, since 2×31340144342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31340144347) 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, 60683 + ... + 257609.

It is an arithmetic number, because the mean of its divisors is an integer number (3164682192).

Almost surely, 2^31340144342 is an apocalyptic number.

31340144342 is a deficient number, since it is larger than the sum of its proper divisors (19294770730).

31340144342 is a wasteful number, since it uses less digits than its factorization.

31340144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203063.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31340144342 its reverse (24344104313), we get a palindrome (55684248655).

The spelling of 31340144342 in words is "thirty-one billion, three hundred forty million, one hundred forty-four thousand, three hundred forty-two".