31225000726 has 4 divisors (see below), whose sum is σ = 46837501092. Its totient is φ = 15612500362.

The previous prime is 31225000717. The next prime is 31225000757. The reversal of 31225000726 is 62700052213.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×31225000726³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31225000694 and 31225000703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7806250180 + ... + 7806250183.

It is an arithmetic number, because the mean of its divisors is an integer number (11709375273).

Almost surely, 2^31225000726 is an apocalyptic number.

31225000726 is a deficient number, since it is larger than the sum of its proper divisors (15612500366).

31225000726 is a wasteful number, since it uses less digits than its factorization.

31225000726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15612500365.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 31225000726 its reverse (62700052213), we get a palindrome (93925052939).

The spelling of 31225000726 in words is "thirty-one billion, two hundred twenty-five million, seven hundred twenty-six", and thus it is an aban number.