31014055440 has 160 divisors (see below), whose sum is σ = 109099445760. Its totient is φ = 8094422016.

The previous prime is 31014055399. The next prime is 31014055441. The reversal of 31014055440 is 4455041013.

It is a happy number.

31014055440 is a `hidden beast` number, since 3 + 101 + 4 + 0 + 554 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31014055441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51229 + ... + 254268.

It is an arithmetic number, because the mean of its divisors is an integer number (681871536).

Almost surely, 2^31014055440 is an apocalyptic number.

31014055440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31014055440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54549722880).

31014055440 is an abundant number, since it is smaller than the sum of its proper divisors (78085390320).

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

31014055440 is a wasteful number, since it uses less digits than its factorization.

31014055440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305566 (or 305554 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 31014055440 its reverse (4455041013), we get a palindrome (35469096453).

The spelling of 31014055440 in words is "thirty-one billion, fourteen million, fifty-five thousand, four hundred forty".