31004121340 has 48 divisors (see below), whose sum is σ = 68579068320. Its totient is φ = 11741448960.

The previous prime is 31004121287. The next prime is 31004121341. The reversal of 31004121340 is 4312140013.

It is a super-2 number, since 2×31004121340² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004121341) 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, 590814 + ... + 641146.

It is an arithmetic number, because the mean of its divisors is an integer number (1428730590).

Almost surely, 2^31004121340 is an apocalyptic number.

It is an amenable number.

31004121340 is an abundant number, since it is smaller than the sum of its proper divisors (37574946980).

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

31004121340 is a wasteful number, since it uses less digits than its factorization.

31004121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51982 (or 51980 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31004121340 its reverse (4312140013), we get a palindrome (35316261353).

The spelling of 31004121340 in words is "thirty-one billion, four million, one hundred twenty-one thousand, three hundred forty".