1305431421454 has 16 divisors (see below), whose sum is σ = 1960388152992. Its totient is φ = 651969083808.

The previous prime is 1305431421443. The next prime is 1305431421559. The reversal of 1305431421454 is 4541241345031.

It is a happy number.

It is a super-2 number, since 2×1305431421454² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6924952 + ... + 7110964.

It is an arithmetic number, because the mean of its divisors is an integer number (122524259562).

Almost surely, 2^{1305431421454} is an apocalyptic number.

1305431421454 is a deficient number, since it is larger than the sum of its proper divisors (654956731538).

1305431421454 is a wasteful number, since it uses less digits than its factorization.

1305431421454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190011.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 1305431421454 its reverse (4541241345031), we get a palindrome (5846672766485).

The spelling of 1305431421454 in words is "one trillion, three hundred five billion, four hundred thirty-one million, four hundred twenty-one thousand, four hundred fifty-four".