31401342403122 has 32 divisors (see below), whose sum is σ = 63003740272704. Its totient is φ = 10433651662400.

The previous prime is 31401342403073. The next prime is 31401342403127. The reversal of 31401342403122 is 22130424310413.

It is a self number, because there is not a number n which added to its sum of digits gives 31401342403122.

It is not an unprimeable number, because it can be changed into a prime (31401342403127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160053 + ... + 8531624.

It is an arithmetic number, because the mean of its divisors is an integer number (1968866883522).

Almost surely, 2^{31401342403122} is an apocalyptic number.

31401342403122 is an abundant number, since it is smaller than the sum of its proper divisors (31602397869582).

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

31401342403122 is a wasteful number, since it uses less digits than its factorization.

31401342403122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11693114.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 31401342403122 its reverse (22130424310413), we get a palindrome (53531766713535).

The spelling of 31401342403122 in words is "thirty-one trillion, four hundred one billion, three hundred forty-two million, four hundred three thousand, one hundred twenty-two".