1630473031 has 16 divisors (see below), whose sum is σ = 1816347168. Its totient is φ = 1451174400.

The previous prime is 1630473023. The next prime is 1630473067. The reversal of 1630473031 is 1303740361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1630473031 - 2³ = 1630473023 is a prime.

It is a super-2 number, since 2×1630473031² = 5316884609636653922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630473631) 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, 102601 + ... + 117421.

It is an arithmetic number, because the mean of its divisors is an integer number (113521698).

Almost surely, 2^1630473031 is an apocalyptic number.

1630473031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1630473031 is a deficient number, since it is larger than the sum of its proper divisors (185874137).

1630473031 is a wasteful number, since it uses less digits than its factorization.

1630473031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15042.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 1630473031 is about 40379.1162731430. The cubic root of 1630473031 is about 1176.9857548360.

The spelling of 1630473031 in words is "one billion, six hundred thirty million, four hundred seventy-three thousand, thirty-one".