31431243201 has 8 divisors (see below), whose sum is σ = 43260205824. Its totient is φ = 20278221360.

The previous prime is 31431243199. The next prime is 31431243227. The reversal of 31431243201 is 10234213413.

It is a happy number.

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

It is not a de Polignac number, because 31431243201 - 2¹ = 31431243199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31431243241) 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, 168985086 + ... + 168985271.

It is an arithmetic number, because the mean of its divisors is an integer number (5407525728).

Almost surely, 2^31431243201 is an apocalyptic number.

31431243201 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31431243201 is a deficient number, since it is larger than the sum of its proper divisors (11828962623).

31431243201 is a wasteful number, since it uses less digits than its factorization.

31431243201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337970391.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31431243201 its reverse (10234213413), we get a palindrome (41665456614).

The spelling of 31431243201 in words is "thirty-one billion, four hundred thirty-one million, two hundred forty-three thousand, two hundred one".