31243331203040 has 96 divisors (see below), whose sum is σ = 84023567502336. Its totient is φ = 10867245621760.

The previous prime is 31243331202983. The next prime is 31243331203069. The reversal of 31243331203040 is 4030213334213.

It is a super-2 number, since 2×31243331203040² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31243331202994 and 31243331203012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385870232 + ... + 385951191.

It is an arithmetic number, because the mean of its divisors is an integer number (875245494816).

Almost surely, 2^{31243331203040} is an apocalyptic number.

It is an amenable number.

31243331203040 is an abundant number, since it is smaller than the sum of its proper divisors (52780236299296).

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

31243331203040 is a wasteful number, since it uses less digits than its factorization.

31243331203040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771821472 (or 771821464 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31243331203040 its reverse (4030213334213), we get a palindrome (35273544537253).

The spelling of 31243331203040 in words is "thirty-one trillion, two hundred forty-three billion, three hundred thirty-one million, two hundred three thousand, forty".