31401342403120 has 40 divisors (see below), whose sum is σ = 73023745350816. Its totient is φ = 12557848915968.

The previous prime is 31401342403073. The next prime is 31401342403127. The reversal of 31401342403120 is 2130424310413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (31401342403127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41624532 + ... + 42372211.

Almost surely, 2^{31401342403120} is an apocalyptic number.

It is an amenable number.

31401342403120 is an abundant number, since it is smaller than the sum of its proper divisors (41622402947696).

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

31401342403120 is a wasteful number, since it uses less digits than its factorization.

31401342403120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84001429 (or 84001423 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31401342403120 its reverse (2130424310413), we get a palindrome (33531766713533).

The spelling of 31401342403120 in words is "thirty-one trillion, four hundred one billion, three hundred forty-two million, four hundred three thousand, one hundred twenty".