31400145331040 has 24 divisors (see below), whose sum is σ = 74182843344960. Its totient is φ = 12560058132352.

The previous prime is 31400145331003. The next prime is 31400145331171. The reversal of 31400145331040 is 4013354100413.

It is a happy number.

It is a super-2 number, since 2×31400145331040² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31400145330994 and 31400145331012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98125454000 + ... + 98125454319.

It is an arithmetic number, because the mean of its divisors is an integer number (3090951806040).

Almost surely, 2^{31400145331040} is an apocalyptic number.

It is an amenable number.

31400145331040 is an abundant number, since it is smaller than the sum of its proper divisors (42782698013920).

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

31400145331040 is a wasteful number, since it uses less digits than its factorization.

31400145331040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196250908334 (or 196250908326 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 31400145331040 its reverse (4013354100413), we get a palindrome (35413499431453).

The spelling of 31400145331040 in words is "thirty-one trillion, four hundred billion, one hundred forty-five million, three hundred thirty-one thousand, forty".