31422002144 has 24 divisors (see below), whose sum is σ = 66620688120. Its totient is φ = 14502462336.

The previous prime is 31422002119. The next prime is 31422002149. The reversal of 31422002144 is 44120022413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422002149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37766414 + ... + 37767245.

It is an arithmetic number, because the mean of its divisors is an integer number (2775862005).

Almost surely, 2^31422002144 is an apocalyptic number.

It is an amenable number.

31422002144 is an abundant number, since it is smaller than the sum of its proper divisors (35198685976).

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

31422002144 is a wasteful number, since it uses less digits than its factorization.

31422002144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75533682 (or 75533674 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 31422002144 its reverse (44120022413), we get a palindrome (75542024557).

The spelling of 31422002144 in words is "thirty-one billion, four hundred twenty-two million, two thousand, one hundred forty-four".