31012300540 has 48 divisors (see below), whose sum is σ = 70336677600.
Its totient is φ = 11417852160.
The previous prime is 31012300531. The next prime is 31012300549. The reversal of 31012300540 is 4500321013.
Adding to 31012300540 its reverse (4500321013), we get a palindrome (35512621553).
It is an interprime number because it is at equal distance from previous prime (31012300531) and next prime (31012300549).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31012300549) 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, 80146 + ... + 261625.
It is an arithmetic number, because the mean of its divisors is an integer number (1465347450).
Almost surely, 231012300540 is an apocalyptic number.
It is an amenable number.
31012300540 is an abundant number, since it is smaller than the sum of its proper divisors (39324377060).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31012300540 is a wasteful number, since it uses less digits than its factorization.
31012300540 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 342142 (or 342140 counting only the distinct ones).
The product of its (nonzero) digits is 360, while the sum is 19.
The spelling of 31012300540 in words is "thirty-one billion, twelve million, three hundred thousand, five hundred forty".