31256001460 has 24 divisors (see below), whose sum is σ = 65681985096. Its totient is φ = 12493946880.

The previous prime is 31256001431. The next prime is 31256001467. The reversal of 31256001460 is 6410065213.

It can be written as a sum of positive squares in 4 ways, for example, as 458559396 + 30797442064 = 21414^2 + 175492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31256001467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497997 + ... + 557236.

It is an arithmetic number, because the mean of its divisors is an integer number (2736749379).

Almost surely, 2^31256001460 is an apocalyptic number.

It is an amenable number.

31256001460 is an abundant number, since it is smaller than the sum of its proper divisors (34425983636).

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

31256001460 is a wasteful number, since it uses less digits than its factorization.

31256001460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056723 (or 1056721 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 31256001460 its reverse (6410065213), we get a palindrome (37666066673).

The spelling of 31256001460 in words is "thirty-one billion, two hundred fifty-six million, one thousand, four hundred sixty".