1211030041431 has 16 divisors (see below), whose sum is σ = 1845401025024. Its totient is φ = 692008948704.

The previous prime is 1211030041421. The next prime is 1211030041489. The reversal of 1211030041431 is 1341400301121.

It is not a de Polignac number, because 1211030041431 - 2⁹ = 1211030040919 is a prime.

It is a super-2 number, since 2×1211030041431² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1211030041398 and 1211030041407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211030041421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771621 + ... + 2358113.

It is an arithmetic number, because the mean of its divisors is an integer number (115337564064).

Almost surely, 2^{1211030041431} is an apocalyptic number.

1211030041431 is a deficient number, since it is larger than the sum of its proper divisors (634370983593).

1211030041431 is an equidigital number, since it uses as much as digits as its factorization.

1211030041431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684830.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211030041431 its reverse (1341400301121), we get a palindrome (2552430342552).

The spelling of 1211030041431 in words is "one trillion, two hundred eleven billion, thirty million, forty-one thousand, four hundred thirty-one".