31405100105053 has 4 divisors (see below), whose sum is σ = 33252458934780. Its totient is φ = 29557741275328.

The previous prime is 31405100105033. The next prime is 31405100105059. The reversal of 31405100105053 is 35050100150413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21324843401689 + 10080256703364 = 4617883^2 + 3174942^2 .

It is a cyclic number.

It is not a de Polignac number, because 31405100105053 - 2⁵ = 31405100105021 is a prime.

It is a super-2 number, since 2×31405100105053² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31405100105059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923679414838 + ... + 923679414871.

It is an arithmetic number, because the mean of its divisors is an integer number (8313114733695).

Almost surely, 2^{31405100105053} is an apocalyptic number.

It is an amenable number.

31405100105053 is a deficient number, since it is larger than the sum of its proper divisors (1847358829727).

31405100105053 is a wasteful number, since it uses less digits than its factorization.

31405100105053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847358829726.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 31405100105053 its reverse (35050100150413), we get a palindrome (66455200255466).

The spelling of 31405100105053 in words is "thirty-one trillion, four hundred five billion, one hundred million, one hundred five thousand, fifty-three".