31430243031401 has 2 divisors, whose sum is σ = 31430243031402. Its totient is φ = 31430243031400.

The previous prime is 31430243031377. The next prime is 31430243031463. The reversal of 31430243031401 is 10413034203413.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24356643210025 + 7073599821376 = 4935245^2 + 2659624^2 .

It is a cyclic number.

It is not a de Polignac number, because 31430243031401 - 2¹⁸ = 31430242769257 is a prime.

It is a super-3 number, since 3×31430243031401³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (31430243033401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715121515700 + 15715121515701.

It is an arithmetic number, because the mean of its divisors is an integer number (15715121515701).

Almost surely, 2^{31430243031401} is an apocalyptic number.

It is an amenable number.

31430243031401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430243031401 is an equidigital number, since it uses as much as digits as its factorization.

31430243031401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31430243031401 its reverse (10413034203413), we get a palindrome (41843277234814).

The spelling of 31430243031401 in words is "thirty-one trillion, four hundred thirty billion, two hundred forty-three million, thirty-one thousand, four hundred one".