31131100001 has 8 divisors (see below), whose sum is σ = 32486495040. Its totient is φ = 29775860752.

The previous prime is 31131099983. The next prime is 31131100019. The reversal of 31131100001 is 10000113113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31131099983) and next prime (31131100019).

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 31131100001 - 2¹⁴ = 31131083617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31131100081) 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, 576506 + ... + 628188.

It is an arithmetic number, because the mean of its divisors is an integer number (4060811880).

Almost surely, 2^31131100001 is an apocalyptic number.

It is an amenable number.

31131100001 is a deficient number, since it is larger than the sum of its proper divisors (1355395039).

31131100001 is a wasteful number, since it uses less digits than its factorization.

31131100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77895.

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 31131100001 its reverse (10000113113), we get a palindrome (41131213114).

The spelling of 31131100001 in words is "thirty-one billion, one hundred thirty-one million, one hundred thousand, one".