31455342242000 has 80 divisors (see below), whose sum is σ = 76211442840000. Its totient is φ = 12556921795200.

The previous prime is 31455342241991. The next prime is 31455342242017. The reversal of 31455342242000 is 24224355413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×31455342242000² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14761190 + ... + 16757189.

It is an arithmetic number, because the mean of its divisors is an integer number (952643035500).

Almost surely, 2^{31455342242000} is an apocalyptic number.

It is an amenable number.

31455342242000 is an abundant number, since it is smaller than the sum of its proper divisors (44756100598000).

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

31455342242000 is a wasteful number, since it uses less digits than its factorization.

31455342242000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31518901 (or 31518885 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 31455342242000 its reverse (24224355413), we get a palindrome (31479566597413).

The spelling of 31455342242000 in words is "thirty-one trillion, four hundred fifty-five billion, three hundred forty-two million, two hundred forty-two thousand".