31423033201440 has 96 divisors (see below), whose sum is σ = 99529419802176. Its totient is φ = 8333180052480.

The previous prime is 31423033201387. The next prime is 31423033201451. The reversal of 31423033201440 is 4410233032413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31423033201398 and 31423033201407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180754702 + ... + 180928461.

It is an arithmetic number, because the mean of its divisors is an integer number (1036764789606).

Almost surely, 2^{31423033201440} is an apocalyptic number.

31423033201440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31423033201440 is an abundant number, since it is smaller than the sum of its proper divisors (68106386600736).

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

31423033201440 is a wasteful number, since it uses less digits than its factorization.

31423033201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361683362 (or 361683354 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 31423033201440 its reverse (4410233032413), we get a palindrome (35833266233853).

The spelling of 31423033201440 in words is "thirty-one trillion, four hundred twenty-three billion, thirty-three million, two hundred one thousand, four hundred forty".