31226954440 has 64 divisors (see below), whose sum is σ = 76861872000. Its totient is φ = 11323568640.

The previous prime is 31226954419. The next prime is 31226954501. The reversal of 31226954440 is 4445962213.

It is a happy number.

It is a super-3 number, since 3×31226954440³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 31226954393 and 31226954402.

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, 59116 + ... + 256804.

It is an arithmetic number, because the mean of its divisors is an integer number (1200966750).

Almost surely, 2^31226954440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31226954440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38430936000).

31226954440 is an abundant number, since it is smaller than the sum of its proper divisors (45634917560).

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

31226954440 is a wasteful number, since it uses less digits than its factorization.

31226954440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198070 (or 198066 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 31226954440 in words is "thirty-one billion, two hundred twenty-six million, nine hundred fifty-four thousand, four hundred forty".