31321342330140 has 48 divisors (see below), whose sum is σ = 87902298455328. Its totient is φ = 8333068437504.

The previous prime is 31321342330111. The next prime is 31321342330147. The reversal of 31321342330140 is 4103324312313.

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 = 31321342330098 and 31321342330107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321342330147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602771217 + ... + 602823176.

It is an arithmetic number, because the mean of its divisors is an integer number (1831297884486).

Almost surely, 2^{31321342330140} is an apocalyptic number.

31321342330140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31321342330140 is an abundant number, since it is smaller than the sum of its proper divisors (56580956125188).

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

31321342330140 is a wasteful number, since it uses less digits than its factorization.

31321342330140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205594838 (or 1205594836 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 31321342330140 its reverse (4103324312313), we get a palindrome (35424666642453).

The spelling of 31321342330140 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred forty-two million, three hundred thirty thousand, one hundred forty".