31352012144 has 20 divisors (see below), whose sum is σ = 60777013296. Its totient is φ = 15667621632.

The previous prime is 31352012141. The next prime is 31352012171. The reversal of 31352012144 is 44121025313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31352012141) 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, 493124 + ... + 553059.

Almost surely, 2^31352012144 is an apocalyptic number.

It is an amenable number.

31352012144 is a deficient number, since it is larger than the sum of its proper divisors (29425001152).

31352012144 is a wasteful number, since it uses less digits than its factorization.

31352012144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048064 (or 1048058 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31352012144 its reverse (44121025313), we get a palindrome (75473037457).

The spelling of 31352012144 in words is "thirty-one billion, three hundred fifty-two million, twelve thousand, one hundred forty-four".