31400021033142 has 16 divisors (see below), whose sum is σ = 62800102913472. Its totient is φ = 10466663536520.

The previous prime is 31400021033131. The next prime is 31400021033149. The reversal of 31400021033142 is 24133012000413.

It is a happy number.

It is a super-2 number, since 2×31400021033142² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400021033149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6840373 + ... + 10468559.

It is an arithmetic number, because the mean of its divisors is an integer number (3925006432092).

Almost surely, 2^{31400021033142} is an apocalyptic number.

31400021033142 is an abundant number, since it is smaller than the sum of its proper divisors (31400081880330).

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

31400021033142 is a wasteful number, since it uses less digits than its factorization.

31400021033142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070603.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31400021033142 its reverse (24133012000413), we get a palindrome (55533033033555).

The spelling of 31400021033142 in words is "thirty-one trillion, four hundred billion, twenty-one million, thirty-three thousand, one hundred forty-two".