31401431421342 has 16 divisors (see below), whose sum is σ = 62817898292112. Its totient is φ = 10464637898880.

The previous prime is 31401431421323. The next prime is 31401431421343. The reversal of 31401431421342 is 24312413410413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401431421343) 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, 626449909 + ... + 626500032.

It is an arithmetic number, because the mean of its divisors is an integer number (3926118643257).

Almost surely, 2^{31401431421342} is an apocalyptic number.

31401431421342 is an abundant number, since it is smaller than the sum of its proper divisors (31416466870770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31401431421342 is a wasteful number, since it uses less digits than its factorization.

31401431421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252954123.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 31401431421342 its reverse (24312413410413), we get a palindrome (55713844831755).

The spelling of 31401431421342 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, four hundred twenty-one thousand, three hundred forty-two".