1214151631 has 12 divisors (see below), whose sum is σ = 1525216336. Its totient is φ = 946091520.

The previous prime is 1214151607. The next prime is 1214151641. The reversal of 1214151631 is 1361514121.

It is not a de Polignac number, because 1214151631 - 2⁵ = 1214151599 is a prime.

It is a super-2 number, since 2×1214151631² = 2948328366119920322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1214151596 and 1214151605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214151641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715890 + ... + 717583.

Almost surely, 2^1214151631 is an apocalyptic number.

1214151631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1214151631 is a deficient number, since it is larger than the sum of its proper divisors (311064705).

1214151631 is a wasteful number, since it uses less digits than its factorization.

1214151631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433502 (or 1433491 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 1214151631 is about 34844.6786611672. The cubic root of 1214151631 is about 1066.8195748350.

Adding to 1214151631 its reverse (1361514121), we get a palindrome (2575665752).

The spelling of 1214151631 in words is "one billion, two hundred fourteen million, one hundred fifty-one thousand, six hundred thirty-one".