1401663031 has 2 divisors, whose sum is σ = 1401663032. Its totient is φ = 1401663030.

The previous prime is 1401663017. The next prime is 1401663091. The reversal of 1401663031 is 1303661041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401663031 - 2²⁹ = 864792119 is a prime.

It is a super-2 number, since 2×1401663031² = 3929318504944213922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1401662987 and 1401663005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401663091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700831515 + 700831516.

It is an arithmetic number, because the mean of its divisors is an integer number (700831516).

Almost surely, 2^1401663031 is an apocalyptic number.

1401663031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401663031 is an equidigital number, since it uses as much as digits as its factorization.

1401663031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1401663031 is about 37438.7904585605. The cubic root of 1401663031 is about 1119.1317226115.

The spelling of 1401663031 in words is "one billion, four hundred one million, six hundred sixty-three thousand, thirty-one".