1421013231231 has 32 divisors (see below), whose sum is σ = 2072889004032. Its totient is φ = 858737477760.

The previous prime is 1421013231227. The next prime is 1421013231257. The reversal of 1421013231231 is 1321323101241.

It is not a de Polignac number, because 1421013231231 - 2² = 1421013231227 is a prime.

It is a super-2 number, since 2×1421013231231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421013231271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87422701 + ... + 87438953.

It is an arithmetic number, because the mean of its divisors is an integer number (64777781376).

Almost surely, 2^{1421013231231} is an apocalyptic number.

1421013231231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1421013231231 is a deficient number, since it is larger than the sum of its proper divisors (651875772801).

1421013231231 is a wasteful number, since it uses less digits than its factorization.

1421013231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23743.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1421013231231 its reverse (1321323101241), we get a palindrome (2742336332472).

The spelling of 1421013231231 in words is "one trillion, four hundred twenty-one billion, thirteen million, two hundred thirty-one thousand, two hundred thirty-one".