31000424153540 has 24 divisors (see below), whose sum is σ = 65709310266432. Its totient is φ = 12284280224480.

The previous prime is 31000424153459. The next prime is 31000424153561. The reversal of 31000424153540 is 4535142400013.

It is a super-2 number, since 2×31000424153540² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000424153497 and 31000424153506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7243087616 + ... + 7243091895.

It is an arithmetic number, because the mean of its divisors is an integer number (2737887927768).

Almost surely, 2^{31000424153540} is an apocalyptic number.

It is an amenable number.

31000424153540 is an abundant number, since it is smaller than the sum of its proper divisors (34708886112892).

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

31000424153540 is a wasteful number, since it uses less digits than its factorization.

31000424153540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14486179627 (or 14486179625 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 31000424153540 its reverse (4535142400013), we get a palindrome (35535566553553).

The spelling of 31000424153540 in words is "thirty-one trillion, four hundred twenty-four million, one hundred fifty-three thousand, five hundred forty".