31431414121 has 8 divisors (see below), whose sum is σ = 33291319464. Its totient is φ = 29572730880.

The previous prime is 31431414071. The next prime is 31431414151. The reversal of 31431414121 is 12141413413.

It can be written as a sum of positive squares in 4 ways, for example, as 18342910096 + 13088504025 = 135436^2 + 114405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31431414121 - 2¹¹ = 31431412073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31431414151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252300 + ... + 355693.

It is an arithmetic number, because the mean of its divisors is an integer number (4161414933).

Almost surely, 2^31431414121 is an apocalyptic number.

It is an amenable number.

31431414121 is a deficient number, since it is larger than the sum of its proper divisors (1859905343).

31431414121 is a wasteful number, since it uses less digits than its factorization.

31431414121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611051.

The product of its digits is 1152, while the sum is 25.

Adding to 31431414121 its reverse (12141413413), we get a palindrome (43572827534).

The spelling of 31431414121 in words is "thirty-one billion, four hundred thirty-one million, four hundred fourteen thousand, one hundred twenty-one".