1211403031430 has 32 divisors (see below), whose sum is σ = 2218236619680. Its totient is φ = 476186533120.

The previous prime is 1211403031379. The next prime is 1211403031457. The reversal of 1211403031430 is 341303041121.

It is a super-3 number, since 3×1211403031430³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1211403031396 and 1211403031405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397450 + ... + 2091810.

It is an arithmetic number, because the mean of its divisors is an integer number (69319894365).

Almost surely, 2^{1211403031430} is an apocalyptic number.

1211403031430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211403031430 is a deficient number, since it is larger than the sum of its proper divisors (1006833588250).

1211403031430 is a wasteful number, since it uses less digits than its factorization.

1211403031430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697384.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211403031430 its reverse (341303041121), we get a palindrome (1552706072551).

The spelling of 1211403031430 in words is "one trillion, two hundred eleven billion, four hundred three million, thirty-one thousand, four hundred thirty".