31401021403104 has 96 divisors (see below), whose sum is σ = 82913117253120. Its totient is φ = 10405399667712.

The previous prime is 31401021403091. The next prime is 31401021403117. The reversal of 31401021403104 is 40130412010413.

It is an interprime number because it is at equal distance from previous prime (31401021403091) and next prime (31401021403117).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 57172804 + ... + 57719420.

It is an arithmetic number, because the mean of its divisors is an integer number (863678304720).

Almost surely, 2^{31401021403104} 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 31401021403104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41456558626560).

31401021403104 is an abundant number, since it is smaller than the sum of its proper divisors (51512095850016).

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

31401021403104 is a wasteful number, since it uses less digits than its factorization.

31401021403104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550152 (or 550144 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31401021403104 its reverse (40130412010413), we get a palindrome (71531433413517).

The spelling of 31401021403104 in words is "thirty-one trillion, four hundred one billion, twenty-one million, four hundred three thousand, one hundred four".