31401140132442 has 64 divisors (see below), whose sum is σ = 67046507925120. Its totient is φ = 9775457685504.

The previous prime is 31401140132407. The next prime is 31401140132471. The reversal of 31401140132442 is 24423104110413.

It is a happy number.

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, 15850108 + ... + 17720840.

It is an arithmetic number, because the mean of its divisors is an integer number (1047601686330).

Almost surely, 2^{31401140132442} is an apocalyptic number.

31401140132442 is an abundant number, since it is smaller than the sum of its proper divisors (35645367792678).

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

31401140132442 is a wasteful number, since it uses less digits than its factorization.

31401140132442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872847.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 31401140132442 its reverse (24423104110413), we get a palindrome (55824244242855).

The spelling of 31401140132442 in words is "thirty-one trillion, four hundred one billion, one hundred forty million, one hundred thirty-two thousand, four hundred forty-two".