31400422012144 has 10 divisors (see below), whose sum is σ = 60838317648560. Its totient is φ = 15700211006064.

The previous prime is 31400422012139. The next prime is 31400422012189. The reversal of 31400422012144 is 44121022400413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981263187864 + ... + 981263187895.

It is an arithmetic number, because the mean of its divisors is an integer number (6083831764856).

Almost surely, 2^{31400422012144} is an apocalyptic number.

It is an amenable number.

31400422012144 is a deficient number, since it is larger than the sum of its proper divisors (29437895636416).

31400422012144 is a wasteful number, since it uses less digits than its factorization.

31400422012144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962526375767 (or 1962526375761 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 31400422012144 its reverse (44121022400413), we get a palindrome (75521444412557).

The spelling of 31400422012144 in words is "thirty-one trillion, four hundred billion, four hundred twenty-two million, twelve thousand, one hundred forty-four".